[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-314964-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-314964-en":131},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","ap-environmental-science-free-response-questions-set-1-314964","AP® Environmental Science - Free-Response Questions Set 1","","AP Environmental Science Section II Free-Response Questions Set 1 contains three weighted questions for a 1 hour 10 minutes session, with an expected pace of about 22 minutes per question. The set evaluates experimental design and ecological reasoning, including identifying a control group and scientific question, interpreting runoff and soil temperature data for genetically modified vs unmodified green beans, and explaining how irrigation time changes outcomes. It also tests interpreting manatee movement and linking temperature constraints to behavior and survival.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/ap-environmental-science-free-response-questions-set-1-314964/314964/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/ap-environmental-science-free-response-questions-set-1-314964/314964.png","ImageObject",300,407,{"name":42,"@type":43},"Hazel","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-27","2026-09-20",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",12,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What are the directions for answering this free-response set?","Question",{"text":63,"@type":64},"Answer all three questions, which are weighted equally. Show calculations and support explanations with relevant information or specific examples, and write responses in the separate Free Response booklet.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"In the green bean experiment, what is the control group?",{"text":68,"@type":64},"Plot D, planted with unmodified green beans, serves as the control group.",{"name":70,"@type":61,"acceptedAnswer":71},"How does changing the spray irrigation time from one hour to 20 minutes affect the experiment?",{"text":72,"@type":64},"Reducing irrigation can alter yields and related measurements such as nutrient and sediment runoff, because water availability changes the conditions under which the crops grow.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},314964,1790431786,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,100,105,110,115,120,123,127],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":106,"doc_module":4,"doc_module_name":25,"category_name":107,"show_sort_weight":108,"slug":109},7,"Healthcare",40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":124,"doc_module":4,"doc_module_name":25,"category_name":125,"show_sort_weight":124,"slug":126},10,"Lifestyle","lifestyle",{"id":128,"doc_module":4,"doc_module_name":25,"category_name":129,"show_sort_weight":96,"slug":130},19,"General","general",{"code":4,"msg":82,"data":132},{"doc_id":79,"user_id":133,"nickname":42,"user_avatar":134,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":106,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145,"preview_page_count":4},137441390410,"https://ap-avatar.wpscdn.com/avatar/2000252f4ab5702993?_k=1776741390130283984","2023  \nAP® Environmental Science  \nFree-Response Questions Set 1  \n© 2023 College Board. 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](collegeboard.org).  \n[AP Central is the official online home for the AP Program: apcentral.collegeboard.org](AP Central is the official online home for the AP Program: apcentral.collegeboard.org).  \nENVIRONMENTAL SCIENCE  \nSECTION II  \nTime—1 hour and 10 minutes  \n3 Questions  \nDirections: Answer all three questions, which are weighted equally; the suggested time is about 22 minutes for answering each question. Write all your answers in the Free Response booklet. Where calculations are required, clearly show how you arrived at your answer. Where explanation or discussion is required, support your answers with relevant information and/or specific examples. You may plan your answers in this orange booklet, but no credit will be given for anything written in this booklet. You will only earn credit for what you write in the separate Free Response booklet.  \n1. Researchers interested in sustainability developed three new varieties of genetically modified green beans designed to produce higher yields in arid regions. Four plots (A–D) were set up on a floodplain of a river to grow beans. Plots A, B, and C were each planted with seeds of different types of genetically modified strains of green beans. Plot D was planted with seeds of unmodified green beans. Each plot was given equal amounts of fertilizer, which contains phosphorus and nitrogen, and water and was irrigated using spray irrigation for one hour per day. Throughout the growing season, researchers measured the amount of green beans harvested within each plot. The plots with genetically modified beans had higher crop yields than the plot with unmodified beans.  \n(a) Identify the control group in this experiment.  \n(b) Identify the scientific question for the investigation.  \n(c) Researchers repeated the experiment by modifying the length of time for the spray irrigation to 20 minutes per day. Explain how the results of the experiment could be altered with this modification.  \nResearchers also monitored the amount of sediment and fertilizer washing into the river from each plot in the original study. The soil temperature was also measured in each plot at the same depth and at the same time each day approximately 0.05 meters below the surface of the soil.  \nGenetically Modified Green Bean Experimental Results  \n\n| Plot | Sediment Runoff\u003Cbr>(mg/L) | Phosphorus Runoff\u003Cbr>(mg/L) | Nitrogen Runoff\u003Cbr>(mg/L) | Soil Temperature\u003Cbr>(°C) |\n| --- | --- | --- | --- | --- |\n| A (Type 1 GMO beans) | 2.4 | 0.11 | 1.07 | 18.6 |\n| B (Type 2 GMO beans) | 2.1 | 0.02 | 0.56 | 18.3 |\n| C (Type 3 GMO beans) | 0.9 | 0.04 | 0.68 | 18.3 |\n| D (Unmodified beans) | 3.5 | 0.15 | 1.24 | 17.6 |\n\n(d) Based on the data in the table, identify the plot with the lowest soil temperature.  \n(e) Describe how sediment runoff and fertilizer runoff compare between the unmodified green beans and the genetically modified green beans.  \n© 2023 College Board.  \nVisit College Board on the web: [collegeboard.org](collegeboard.org).  \nGO ON TO THE NEXT PAGE.  \n(f) The Type 2 GMO beans in Plot B were developed to grow more quickly than the unmodified beans in Plot D. Researchers have hypothesized that the Type 2 beans would use fertilizer more completely than the other varieties. Based on the data in the table and the experimental design, explain whether the researchers’hypothesis was supported or refuted.  \nOnce the experiment was concluded, the researchers burned the plots to remove the crops that had been planted. After a few years, the researchers returned to the plots and observed a variety of plants, insects, and bird species living there.  \n(g) Describe the ecological process that occurred on the plots after the crops were burned.  \nA survey indicated that one of the ","cbCaif1scONLm6b9","https://ap.wps.com/l/cbCaif1scONLm6b9","pdf",162774,"English","# Section II\n## Question 1\n## Question 2","[{\"question\":\"What are the directions for answering this free-response set?\",\"answer\":\"Answer all three questions, which are weighted equally. Show calculations and support explanations with relevant information or specific examples, and write responses in the separate Free Response booklet.\"},{\"question\":\"In the green bean experiment, what is the control group?\",\"answer\":\"Plot D, planted with unmodified green beans, serves as the control group.\"},{\"question\":\"How does changing the spray irrigation time from one hour to 20 minutes affect the experiment?\",\"answer\":\"Reducing irrigation can alter yields and related measurements such as nutrient and sediment runoff, because water availability changes the conditions under which the crops grow.\"}]","AP® Environmental Science - Free-Response Questions Set 1 | PDF",1789902279,18]