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College Board, Advanced Placement, AP, AP Central, and the acorn logo are registered [trademarks of College Board. Visit College Board on the web: collegeboard.org](trademarks of College Board. Visit College Board on the web: collegeboard.org).  \nAP Central is the official online home for [the AP Program: apcentral.collegeboard.org](the AP Program: apcentral.collegeboard.org).  \nENVIRONMENTAL SCIENCE  \nSECTION II  \nTIME – 1 HOUR AND 10 MINUTES  \nDirections:  \nSection II has 3 free-response questions and lasts 1 hour and 10 minutes.  \nIf you are asked to explain, describe, or justify, respond in complete sentences and support your answers with relevant information and/or specific examples. Do not spend time restating the questions or providing more than the number of examples called for.  \nA calculator is available in this application and can be accessed throughout the exam. For the parts of question 3 where calculations are required, clearly show how you arrived at your answer. You do not need to include units unless indicated. Reference information, including directions and options for how to enter symbolic notation using your keyboard, can be used. A digital version is available in this application.  \nYou may pace yourself as you answer the questions in this section, or you may use these optional timing recommendations:  \nThe suggested time is about 22 minutes for each question.  \nYou may use the available paper for scratch work, but credit will only be given for responses entered in this application. Text you enter as an annotation will not be included as part of your answer. Label parts (e.g., Part A, Part B, Part C) and sub-parts (e.g., i., ii., iii.) as needed.  \nYou can go back and forth between questions in this section until time expires. The clock will turn red when 5 minutes remain—the proctor will not give you any time updates or warnings.  \nNote: This exam was originally administered digitally. It is presented here in a format optimized for teacher and student use in the classroom.  \nDuring the AP Exam administration, students have access to reference information. To see the reference information for this course, please visit AP Central:  \n[https://apcentral.collegeboard.org/exam-administration-ordering-scores/administering-exams/](https://apcentral.collegeboard.org/exam-administration-ordering-scores/administering-exams/)[ ](https://apcentral.collegeboard.org/exam-administration-ordering-scores/administering-exams/)[subject-specific/reference-information](subject-specific/reference-information)  \nThe following information applies to parts A, B, C, D, and E.  \nClimate change can affect both terrestrial and marine organisms. Researchers studying the effect of climate change on bird distribution mapped elevation zones at which five bird species lived within a tropical mountain range. Birds are distributed in part according to climaterelated adaptations. Researchers modeled where the birds would most likely live in the future based on climate change predictions.  \nThe results of this study are shown in the following diagram. Each unique shape in the diagram represents a different bird species, labeled A through E. Current distribution is shown on the left side of the figure, and predicted future distribution is shown on the right.  \nBird Species Distribution  \nThe following information applies to parts F, G, and H.  \nSome organisms such as birds can move in response to environmental changes, while other organisms such as corals cannot. Researchers studying the effect of climate change on marine organisms conducted two experiments involving photosynthetic algae that have a symbiotic relationship with corals.  \nIn Experiment 1, the researchers placed photosynthetic algal colonies living in corals in three different saltwater tanks. The temperature of Tank 1 was set to 27cC, the average temperature at which most corals live. Water circula","cbCaiqtCVGPOwMK2","https://ap.wps.com/l/cbCaiqtCVGPOwMK2","pdf",271095,"English","# ENVIRONMENTAL SCIENCE\n## SECTION II\n## Directions\n## Climate change and bird distribution study\n## Bird Species Distribution diagram\n## Climate change and marine organisms experiments\n## Experiment 1 tank setups\n## Experiment 2 tank setups\n## Questions A-J\n### Part A\n### Part B\n### Part C\n### Part D\n### Part E\n### Part F\n### Part G\n### Part H\n### Part I\n### Part J","[{\"question\":\"How long is Section II and how many free-response questions does it include?\",\"answer\":\"Section II lasts 1 hour and 10 minutes and includes 3 free-response questions.\"},{\"question\":\"What should students do if asked to explain, describe, or justify?\",\"answer\":\"Respond in complete sentences and support answers with relevant information and/or specific examples, without restating the questions or giving more examples than requested.\"},{\"question\":\"What were the main differences between Experiment 1 and Experiment 2 in the marine organism study?\",\"answer\":\"Experiment 1 varied tank temperature while keeping conditions otherwise comparable, and researchers counted bleached corals after 30 days. Experiment 2 held temperature constant while varying the amount of sediment and then counted bleached corals after 30 days.\"}]","AP Environmental Science - Free-Response Questions - Section II | PDF",1789894243]