Luckily, theres [], Choosing where to start with an IA can be the hardest part, and this is definitely true for the Physics IA. All Rights Reserved, We use cookies to ensure that we provide the best possible experience on our website. degree with a second major when all of the course requirements for two separate majors have been met. Let However, Math 181, Math 182, and Stat 401are no longer available. Check his personal blog to find more tips on writing. The Internal Assessment (IA) for Math is commonly known as Mathematic Evaluation. in Genetics requires a minimum of 120 credits. Genetics (no lab) upper division course (4). IB Maths is a struggle for most people going through their diploma. By now, you might have an idea what International Baccalaureate (IB) is, right? 1. Dependent Variable: Ethylene levels, CO2 production, qualitative assessment. Determine the effect of glucose concentration on the rate of osmosis. Ensure you have a solid research question and enough data to work with. 8. [3] An evolution algebra is necessarily commutative and flexible but not necessarily associative or power-associative. . Monday 00:00 AM - Saturday 01:00 PM (UTC). Stomata are the areas of gas exchange in leaves. and Colleges work. Flesh each topic out as much as possible and scope what your IA will look like before deciding on one. . 2 These courses with a genetics component can form a useful basis for those who wish to obtain a degree in genetics, but they are not required courses. Make the RIGHT Start: Thoroughly Scope and Plan, Don't Over-Engineer Your Personal Engagement, Demonstrating Understanding VS Getting a Correct Answer. So let's do exactly that. Experimental Setup:Grow germinating seed in environments with different types of diluted antibiotics, see how many succeed in each environment. You can request a custom suggestion of a Biology IA topic from our IB IA experts, or you can spend several minutes of your time, read this article and find awesome suggestions for your next IA. Just starting after finding a topic isn't wise for this IA. Pasted as rich text. 0 ratings 0% found this document useful (0 votes) 63 views 13 pages. Read more here, Dependent Variable: Rate of transpiration (measure with a Potometer), Challenges: Getting the plants, Setting up a Potometer. Download our Guide: How to Write a Perfect Biology IA (Click Here), If youre interested in getting additional support for your Biology IA, we have a team of expert IB Biology tutors that can help you plan, structure and execute your assignment. ( Click here to reset it. You need to come up with possible dependent variables and independent variables alongside the experimental setup. And what is this extended essay for IB Diploma, you ask? In this case, youll need to apply another rule of probability, the If you continue to use this site we will assume that you are happy with it. Instead of just adding calculations onto your IA, explain every step and justify everything you do to solve the problem. It's an inherent advantage we have compared to most other students. Luckily, theres so many great topics to choose from, and we've asked some of our top team to note down some topics that might inspire your own incredible research! . "Illustrating with examples or practical applications" within your explanations is the strongest way to demonstrate your knowledge of the mathematics. We all know that scoring superbly on internal assessments is a great way to boost our IB grades. Create an account to follow your favorite communities and start taking part in conversations. Fundamentals of Public Speaking, or Presentation Strategies. Independent Variable:Temperature, Oxygen availability. Start with Khan Academy's Mathematics page and read through the chapters and topics for calculus and statistics (those are the main ones). Phone: +44 [0]1223 333999 Posted September 7, 2014. Ensure that you connect every part of the whole exploration to the purpose. Experimental setup:Place a corn seed in a dark cupboard with a single light source. Registration confirmation will be emailed to you. Of course, you here to know whether IB is worth your time, money and investment or not. Instead of creating an unnatural backstory, show the examiner authentic personal engagement. Challenge: Gathering enough data, Pollution affecting species growth. In general, keep in mind that for your Chemistry IA we want to measuring how changing one variable has an [], Choosing where to start with an IA can be the hardest part, and this is definitely true for the Physics IA. A. I was starting to write my IA on conditional probability (to be specific, the Doomsday Argument) when my teacher told me that it didn't feel like I completely understood the topic, which was somewhat true. ) chi square lab. WebGenetics: the study of the inheritance of traits Gene: a section of DNA that influences the heredity of a trait Chromosome: dense coils of DNA that contain multiple genes Allele: Make sure the topic has some personal importance to you but add layers of complexity to your investigation to exhibit organic engagement. Maths IA Maths Exploration Topics: Scroll down this page to find over 300 examples of maths IA exploration topics and ideas for IB mathematics students doing their internal assessment (IA) coursework. Topics include Algebra and Number (proof), Geometry, Calculus, Statistics and Probability, Physics, and links with other subjects. Moreover, if The work produced by students is assessed internally by the teacher first, and it is then moderated externally by the IB. A problem about genetics and the transmission of disease. WebGenetics, Development, and Cell Biology 1210 Molecular Biology Building 2437 Pammel Drive Ames, Iowa 50011-1079. gdcb@iastate.edu FAX: 515-294-7629 How do the buffering actions of milk, yogurt, juices, detergents etc. It was fun but I don't think you could get a high grade for it as a Maths IA. Click here to learn more. DR-Nizar Dwaikat. 1 The 80 Most Common IB Biology Exam Questions! This Press J to jump to the feed. Have you given a step-by-step plan of action and explanation of how you will explore your question/aim? Prerequisites that {\displaystyle Z_{e}=\{a\in \ker w:ea=0\}} w {\displaystyle w(a)=1} It can be challenging because of the plethora of options students have. If you are HL, tbh, if you do a further maths topic-related IA or something relating to the options, you could get a high score. Webfor graduation. So there we have it: 30 Biology IA topic ideas to get your lab report started! It is better to do a few things well than a lot of things not so well. [], or you can call us here at: +44 20 4571 0455. In this study, we present some of the basic ideas of population genetics. IB Maths is a struggle for most people going through their diploma. Remember! And wish you good luck with your writings. Experimental setup:construct a seed germination experiment with different seeds and add increasing solutions of NaCl, observing the impact of increasing salt concentration in different seeds. Experimental setup:Follow this link to for more information of modelling! In fact, it is THE most important aspect you need to keep in mind when working on your IB biology internal assessment. By siging up, I agree to Lanternas Examiner reports reveal that a lot of IAs force these complicated methods in the hopes of gaining extra marks but end up losing marks because they couldn't clearly link every part of the exploration to their investigation. Copyright 2023 Get the grade you deserve. {\displaystyle U_{e}^{2}=0} Adding new and unique levels of complexity is the key. . Lost your password? Bonus: Brainstorm the topic from a different perspective (use technology such as software for model development). "Bernstein problem in mathematical genetics", https://en.wikipedia.org/w/index.php?title=Genetic_algebra&oldid=1108573271, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 5 September 2022, at 05:09. equivalent to one hour per week in class for a full semester. e This page provides information on the Genetics degree requirements, double majors, double degree and courses required for a Genetics minor. In applications to genetics, these algebras often have a basis corresponding to the genetically different gametes, and the structure constant of the algebra encode the probabilities of producing offspring of various types. Describe how the primary productivity of algae changes with temperature, algae concentration, other aquatic plants, salinity, nutrients, and any other variables you may want to consider. Experimental setup:In this experiment, you will expose seeds in a germinating environment to different household products solutions at increasing concentrations. Experimental Setup:Create different environments for vegetables to decay in and measure the decay over a fixed period. If youre looking for guidance on how to actually write an IA once youve chosen your topic, check out our IA Checklist post! General physics does not require a previous calculus course whereas classical physics is calculus-based. There is so much out there, and you may find yourself in a position where you are caught between two topics and do not know which one to choose for the IB biology IA. He is a cryptoromantic and blockchain enthusiast for more than 4 years now, and he is excited about the way technology shapes financial and educational systems. There are many other factors that could play a role in your lab report. Introduction to Bioinformatics and Computational Biology (fall), The Genome Perspective in Biology (spring), Fundamentals of Systems Biology and Network Science(spring), (One of these courses is only required for 2016 and newer catalogs). Suitable for Applications and Interpretations students (SL and HL) and also Analysis and Approaches students (SL and HL). Students should take Math 160 or 165 as their first calculus class and choose either Math 166 or Stat 301 to fulfill the third course. By continuing to browse this site, you give consent for cookies to be used. B How did you manipulate the final results to further analyse them? Similarly to the experiment on the rate of decay, you can also measure how quickly fruits ripen, and which factors affect this ripening. For me, I knew wanted to explore ordinary differential equations and after learning advanced ways to use them I decided to focus on modelling tumor growth in the brain. Personal Engagement? Your link has been automatically embedded. Flesh each topic out as much as possible and scope what your IA will look like before deciding on one. You cannot paste images directly. Plan? Can temperature, humidity, or exposure to sunlight affect how quickly vegetables decay? This lot is actually the way a childs brain works, his zeal to excel, and his capacity to decode numbers and numeric relationships. Give us the email address you use to log in to Lanterna and well send you instructions for resetting your password. If you are going to use probability, it seems a bit too simple to me, because it is like 1/4 or something, and that would be like really easy to work out. How Many References are Enough for a 1500 Words Essay? Login length need to be from 3 to 40 characters, Password length need to be from 8 to 40 characters. {\displaystyle 1+c_{1}+\cdots +c_{n}=0} I couldn't find a good enough topic in time and I was getting desperate. Stuck for Ideas planning your Biology IA? Nice to see you here. However it's ok if you'd like to change. http://globalhealthgovernance.org/blog/2017/12/1/how-to-find-data-on-infectious-disease-outbreaks, Heres a useful link for ventilation rates. What are you waiting for? Find the mathematical method that will lead you to a final number or equation and THEN think about the topic you want to apply that method to. Cambridge CB2 3EH Hi guys! 9. 2 Independent Variable: Light exposure, Different Species, Atmospheric CO2 concentration, Dependent Variable: Stomatal density (seen under the microscope). We offer online private tuition from experienced IB graduates who got top marks in their Maths IA. Instead of creating an unnatural backstory, show the examiner authentic personal engagement. Some variations of these algebras are called train algebras, special train algebras, gametic algebras, Bernstein algebras, copular algebras, zygotic algebras, and baric algebras (also called weighted algebra). Many courses in Part IA and Part IB of the Natural Sciences Tripos are multi-departmental. Some variations of these algebras are called train algebras, special train We use cookies to ensure that we give you the best experience on our website. Test how different household cleaning products affect seed germination! 12. a Meiosis Label look at cells in various stages of meiosis, identify and order Meiosis Internet Lesson look at animations of meiosis and answer questions Meiosis Powerpoint slideshow covers meiosis, homologous chromosomes, crossing over. For a second major including Genetics all of the required courses in Genetics and Life Sciences, Supporting Sciences, and Mathematics must be completed (see the B.S. Students across the world always find themselves trying to understand how IB extended essays work because, lets face it, understanding it can get a little tricky. The founders of population genetics are R.A. Fisher, S. Wright, and J. B.S. This is a complete guide to the Mathematics AA and AI Internal Assessment. Independent Variable: Halophyte seed vs Normal Plant seed. Additionally, there are different levels when it comes to doing an essay for Chemistry IA. Read more about it here. Copyright document.write(new Date().getFullYear());Iowa State Universityof Science and TechnologyAll rights reserved. Firstly though, weve compiled 50 common Maths IA topics that may spark some creative juices and set you on your way to conquering one of the hardest assignments of the diploma! The trend the IB examiner reports mention is that students present difficult math concepts and equations without knowing how to properly apply them or without even having a clear purpose for their investigation. defined as principal powers, Lost your password? Skip over navigation. Antibiotics are used to treat plants for bacteria. Still feeling a bit uneasy about this IB biology task? The content provided to you MUST be used with proper referencing. Remember the reason the IB wants you to do an IA is so that you can "develop a wider appreciation for mathematical concepts and processes". Use books, PDFs, and find obscure YouTube videos to help with exploring the topic. My advice would be to find something simple, and just fucking it up mathematically - I think one of the samples is on "modelling the rate of cooling of a tea cup"; mine was "modelling my volume of hair"; I'm sure you could also find stupid shit that your teacher might approve. IB Survival LLC. One course in this area from a university approved list is required. The mathematics used needs to be relevant to a topic in the course obviously and we shouldn't be using any maths that we don't understand. , with At SL and HL levels, the performance is rated concerning a defined assessment criterion which is marked out of the score of 24. After completing ENGL 250 with a C or better, students receive credit for ENGL 150. : Biochemistry II, Quantitative and Environmental Analysis with laboratory, or Chemical Thermodynamics, or Techniques in Biochemical Research. ) Most of us just use a topic like football shots or a piano composition and make some maths up about it. Usually, students use "overly abstract and sophisticated concepts beyond their course" without truly understanding the math. Exploring mollusc shapes with regards to an external variable e.g. description of data collection). Other successful mathematical concepts include the volume of revolution (calculus) based IAs because you can learn to plot multiple curves for difficult objects with a large potential for further application. Copyright 2023 Get the grade you deserve. Investigating the effect of different light intensities on water weeds. Change the different conditions in which the plants are found as well as the species. Web4 The frequencies X00, 2Y00 and Z00 for the next generation are found by replacing X0, 2Y0 and Z0, by X00, 2Y00 and Z00 and X, 2Y and Z by X0, 2Y0 and Z0 in (1){(3). If you are going to use probability, it seems a bit too simple to me, because it is like 1/4 or something, and that There are certainly roles for pure mathematics and computation, but those roles are typically advanced methods to address questions of probability, the design of experiments, or statistical significance. Login length need to be from 3 to 40 characters, Password length need to be from 8 to 40 characters. You can find more information here, Independent Variable: Different Antibiotics, Different Seeds, Dependent Variable: Success of Germination, Rate of Germination. I, personally, shortlisted both modelling the growth of the GBM tumor and modelling the spread of different infectious diseases (different topics using similar mathematical methods and concepts). and how much did you get btw, > calculating the fuel efficiency of a slingshot maneuver. Email length need to be from 5 to 40 characters, Password length need to be from 5 to 40 characters. This is the brochure for prospective Part IIs and not the course handbook, Procedure for applying for your chosen Part II course[s], Postal Address: United Kingdom. As a branch of Science, Biology deals with living organisms' study and looks into their functions, structures, growth and evolution. Exploring effect of light levels on the predation of the peppered moth, 27. How do different antibiotics interact with the process of seed germination? So if my understanding of genetics is OK, I think this seems a bit too simple. We understand that the IB Math is the toughest subject (no kidding, we feel you) and therefore, we are here to aid you as much as we can. For this experiment, youll investigate how different variables affect the rate of decay! At Lanterna we have hundreds of tutors who smashed Biology. ( Etherington (1941) showed that special train algebras are train algebras. This is the unofficial subreddit for all things concerning the International Baccalaureate, an academic credential accorded to secondary students from around the world after two vigorous years of study, culminating in challenging exams. Upload or insert images from URL. {\displaystyle (a^{k-1})a} ( Learn about this topic and its common applications in the world. When choosing the IB IA biology topic, you need to make sure it is a topic you are motivated for. ( Math HL IA: Discrete Mathematics (Finding the optimal route using algorithms) What is the probability of a Chihuahua coming out with certain traits? Comparing the cooling rates of instant coffee and black coffee Every such algebra has idempotents e of the form To declare a second major, students meet with their adviser to complete the curriculum change form. In mathematical genetics, a genetic algebra is a (possibly non-associative) algebra used to model inheritance in genetics. Some variations of these algebras are called train algebras, special train algebras, gametic algebras, Bernstein algebras, copular algebras, zygotic algebras, and baric algebras (also called weighted algebra ). Program-approved lists can be found on the Genetics website. These lectures introduce fundamental concepts of probability and randomness, and how to build {\displaystyle (x^{2})^{2}=w(x)^{2}x^{2}} [1][6], Zygotic algebras were introduced by Etherington (1939, section 7). You are being assessed on 5 criteria for the Internal Assessment. Whether your interests are in molecular biology or human physiology, we're sure you'll enjoy this assignment and learning more about what interests you most. Now that we have that out of the way, lets discuss the potential IB IA biology ideas and topics for your essay. Any suggestions for good philosophy podcasts? n = + For the higher achievement levels make sure you do these: Implications of the results: linking your results to the aim of the exploration and the real impact these conclusions can make. I did the Oberth maneuver for my Physics IA using Kerbal Space Program as a "med-fi simulation" lol. WebIn mathematical genetics, a genetic algebra is a algebra used to model inheritance in genetics. x Moreover, if you decided to ask for expert assistance, you can always call our IB IA writing service, where our expert IB writers will guide you through the process of writing a custom IB Bio IA in a manner of time. Experimental setup: For this experiment, combine a fixed mass of yeast with increasing concentrations of a sucrose solution and measure the rate of CO2 production! To measure the rate, you can either measure how quickly different species grow, or one of the other factors described below. WebMany courses in Part IA and Part IB of the Natural Sciences Tripos are multi-departmental. The slingshot thing is an absolute pain, that's why I was thinking about changing it. Read more about quadrat sampling here, Independent Variable: Soil pH, Nitrates in Soil, Oxygen concentration, Dependent Variable: Presence or absence of certain species. When you managed to fully understand the use of the formulas, use them to do your calculations. 20. k x Be explicit, excruciatingly clear, and don't shorten this part of your IA. You can choose any of the topics from the above-listed ones. e Reflective elements should be present throughout. Its very important that you consider if whether you can apply these topics to your own life, as this shows personal engagement. 4462140. There are two types of models: deterministic and stochastic. Read more about it here. All rights reserved. = 0 [], or you can call us here at: +44 20 4571 0455. In this blog, our PRO IB team decided to avoid vague how-tos and dry theories, so we focused on the main crucial points when selecting a topic for your IB Biology IA. 21. x But how do we get started on a lab report and, crucially, what should we write about? : What is the effect of the salt concentration on germination of different types of seeds? accessibility contact Skip over navigation Terms and conditions; For my Math IA I determined the surface area of an egg. For those interested in writing a Math IA, we have also written an article and provided a list of the best IB Math topics for students who want to succeed. Best possible experience on our website humidity, or you can call us here at: +44 20 0455. The genetics website formulas, use them to do your calculations ideas of genetics... Its Common applications in the world this Part of your IA will look like before deciding on.. This shows personal engagement k-1 } ) a } ( Learn about topic. To different household products solutions at increasing concentrations worth your time, money and investment or not a (. To find more tips on writing your favorite communities and Start taking Part in conversations books. So if my understanding of genetics is ok, I think this seems a bit too.! Well as the species link for ventilation rates everything you do to solve the problem, money and or... Factors described below ideas of population genetics flesh each topic out as much as possible and scope your! Exploring effect of light levels on the genetics degree requirements, double degree and courses required a. Of modelling can be found on the rate of osmosis report started,! A branch of Science, Biology deals with living organisms ' study and looks their. Other subjects lab report started a problem about genetics and the transmission of disease much did you manipulate final... A topic is n't wise for this experiment, you might have an idea what International Baccalaureate ( )., there are many other factors that could play a role in your lab report!. Explanations is the strongest way to demonstrate your knowledge of the basic ideas of population genetics are R.A.,! Flexible but not necessarily associative or power-associative out as much as possible and scope what your IA to. Is commonly known as Mathematic Evaluation use a topic like football shots or a piano and... Ideas to get your lab report and, crucially, what should write... The other factors described below let However, Math 182, and Stat no... And scope what your IA will look like before deciding on one document.write ( new (. Humidity, or you can call us here at: +44 [ 0 ] 1223 333999 Posted September,! Are R.A. Fisher, S. Wright, and J. B.S to work with simulation. Without truly understanding the Math this link to for more information of modelling on IB. Could play a role in your lab report started uneasy about this topic and its Common applications in the.! Are enough for a 1500 Words essay Lanterna and well send you instructions for resetting your Password are enough a! Of seed germination AM - Saturday 01:00 PM ( UTC ) on germination of different types of seeds of genetics... Connect every Part of your IA will look like before deciding on genetics math ia keep in when!: Brainstorm the topic from a different perspective ( use technology such as software for model development.! = 0 [ ], or exposure to sunlight affect how quickly different species Grow, or to... Stomata are the areas of gas exchange in leaves links with other subjects can apply these to. Content provided to you MUST be used with proper referencing Normal Plant seed predation of the topics the! Science and TechnologyAll Rights Reserved, we use cookies to ensure that we have hundreds of tutors who Biology! Connect every Part of the course requirements for two separate majors have met... Ib of the basic ideas of genetics math ia genetics are R.A. Fisher, Wright. To an external Variable e.g check his personal blog to find more tips on writing guidance on how actually! That scoring superbly on Internal assessments is a struggle for most people going through their diploma the final results further... Ib graduates who got top marks in their Maths IA not necessarily associative or power-associative { e ^! That out of the formulas, use them to do a few things than. To find more tips on writing are R.A. Fisher, S. Wright, and find obscure videos! And also Analysis and Approaches students ( SL and HL ) succeed each! Any of the way, lets discuss the potential IB IA Biology ideas and topics your! Proof ), Geometry, Calculus, Statistics and Probability, Physics, and find obscure YouTube videos to with... By now, you ask Probability, Physics, and do n't think you could get genetics math ia high for! Are motivated for to the mathematics exchange in leaves Learn about this topic and its Common applications in the.! Ib is worth your time, money and investment or not crucially, should... And the transmission of disease further analyse them we get started on a lab report idea what International Baccalaureate IB! N'T think you could get a high grade for it as a branch of Science Biology... From a university approved list is required different levels when it comes to doing an essay for diploma! Must be used maneuver for my Math IA I determined the surface area of egg! On how to actually write an IA once youve chosen your topic, you to. Links with other subjects by continuing to browse this site, you consent! Looks into their functions, structures, growth and evolution, and 401are..., money and investment or not over a fixed period an inherent we! Required for a 1500 Words essay to your own life, as this shows personal engagement, Demonstrating understanding Getting! You have a solid research question and enough data to work with are as! ' study and looks into their functions, structures, growth and.! Are motivated for external Variable e.g explore your question/aim IB is worth your time money! Degree requirements, double degree and courses required for a genetics minor an. Correct Answer branch of Science, Biology deals with living organisms ' study and looks their! You manipulate the final results to further analyse them Kerbal Space Program as a IA... And independent variables alongside the experimental setup: Place a corn seed in a dark with... Affect how quickly different species Grow, or you can choose any of the Natural Sciences Tripos are multi-departmental essay! Them to do a few things well than a lot of things not so well: Halophyte seed VS Plant! Contact Skip over navigation Terms and conditions ; for my Physics IA using Kerbal Program... Most other students Chemistry IA, CO2 production, qualitative Assessment demonstrate your knowledge of the basic of! Algebra and Number ( proof ), Geometry, Calculus, Statistics and Probability, Physics, and do shorten! Can apply these topics to your own life, as this shows personal engagement to ensure we... Cleaning products affect seed germination is a topic you are being assessed on 5 criteria for the Assessment. Their Maths IA is required from the above-listed ones genetics website find more tips on.! The purpose might have an idea what International Baccalaureate ( IB ) is, right of tutors who smashed.... With possible dependent variables and independent variables alongside the experimental setup: Grow germinating in... Extended essay for IB diploma, you here to know whether IB is worth your,! For guidance on how to actually write an IA once youve chosen your,..., right from 8 to 40 characters, Password length need to be from 8 to 40 characters Oberth. Our IB genetics math ia how many succeed in each environment to get your lab report,... An essay for Chemistry IA your favorite communities and Start taking Part conversations. Biology Internal Assessment engagement, Demonstrating understanding VS Getting a Correct Answer investment. } =0 } adding new and unique levels of complexity is the strongest way to demonstrate your knowledge the. Working on your IB Biology Internal Assessment not require a previous Calculus course whereas classical is. Ok, I think this seems a bit uneasy about this IB Biology Exam!., a genetic algebra is a struggle for most people going through their diploma ] evolution! Formulas, use them to do a few things well than a lot of things so. To demonstrate your knowledge of the topics from the above-listed ones e ^. Webmany courses in Part IA and Part IB of the mathematics give consent for cookies to be from 3 40. Truly understanding the Math external Variable e.g you 'd like to change is required possible dependent variables and variables. ( ).getFullYear ( ) ) ; Iowa State Universityof Science and TechnologyAll Reserved... Predation of the whole exploration to the mathematics ( SL and HL.. Models: deterministic and stochastic is ok, I think this seems bit. Biology topic, you ask Biology deals with living organisms ' study and into... Two types of models: deterministic and stochastic the basic ideas of population genetics explore your?! New Date ( ).getFullYear ( ).getFullYear ( ) ) ; State! Inherent advantage we have that out of the Natural Sciences Tripos are multi-departmental are being assessed 5... Enough data to work with cookies to be from 3 to 40 characters, Password length need to up! And looks into their functions, structures, growth and evolution votes ) 63 genetics math ia pages! Is commonly known as Mathematic Evaluation and topics for your essay topic, check out our Checklist! Process of seed germination ( SL and HL ) for two separate have... Have you given a step-by-step Plan of action and explanation of how you will expose in... Alongside the experimental setup: in this study, we present some of the way, lets the. With different types of diluted antibiotics, see how many References are enough for a Words.
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