Every AP Environmental Sciences (APES) FRQ Sorted By Unit

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UPDATED for the 2026-27 School Year. Below is every single AP Environmental Science FRQ from 2015-2026 sorted by topic.

At the end is the predicted FRQs for the upcoming 2027 exam. Good luck!

PRO TIP: Links open in FRQ Atlas — You find the FRQ and upload your working for free, instant AI grading based on scoring guidelines.

Unit 1: The Living World: Ecosystems

• 2026 Q1 (Design an investigation) — Climate change effects on birds, corals, Arctic species.
• 2026 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Ocelot population decline, doubling time, energy calculations.
• 2025 Set 1 Q1 (Design an investigation) — Ant biodiversity, habitat type, nonnative plants.
• 2025 Set 1 Q2 (Analyze an environmental problem and propose a solution) — El Niño, urban flooding, biome comparison.
• 2025 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Serengeti ecosystem, tectonic features, highway impact.
• 2024 Set 1 Q1 (Design an investigation) — Stream DO, BOD zones, macroinvertebrates.
• 2024 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Land use data, urbanization, bobcat conservation.
• 2024 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Drought solutions, prescribed burns, water volume.
• 2023 Set 2 Q1 (Design an investigation) — Mine restoration, plant recovery, soil runoff.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2023 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Asian carp, invasive species, Great Lakes.
• 2022 Set 1 Q1 (Design an investigation) — Mercury pollution, turtle nesting, soil changes.
• 2021 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Amphibian richness, deforestation, land development.
• 2021 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Habitat fragmentation, specialist species, land area.
• 2019 Q1 (Analyze an environmental problem and propose a solution) — Piping plovers, barrier islands, nesting habitat.
• 2019 Q3 (Analyze an environmental problem and propose a solution) — Ocean acidification, CO2 trends, pH levels.
• 2018 Q3 (Analyze an environmental problem and propose a solution) — Arctic food web, sea ice, polar bears.
• 2015 Q1 (Analyze an environmental problem and propose a solution) — Everglades water diversion, phosphorus, restoration.

Unit 2: The Living World: Biodiversity

• 2026 Q1 (Design an investigation) — Climate change effects on birds, corals, Arctic species.
• 2025 Set 1 Q1 (Design an investigation) — Ant biodiversity, habitat type, nonnative plants.
• 2025 Set 2 Q1 (Design an investigation) — Common Tern, wading birds, sea level rise.
• 2025 Set 1 Q2 (Analyze an environmental problem and propose a solution) — El Niño, urban flooding, biome comparison.
• 2025 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Serengeti ecosystem, tectonic features, highway impact.
• 2024 Set 1 Q1 (Design an investigation) — Stream DO, BOD zones, macroinvertebrates.
• 2024 Set 2 Q1 (Design an investigation) — Ecological succession, watershed diagram, clear-cutting.
• 2024 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Land use data, urbanization, bobcat conservation.
• 2024 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Nuclear power, natural gas, CO2 emissions.
• 2024 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Drought solutions, prescribed burns, water volume.
• 2023 Set 1 Q1 (Design an investigation) — GMO beans, runoff, ecological succession.
• 2023 Set 2 Q1 (Design an investigation) — Mine restoration, plant recovery, soil runoff.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2023 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Asian carp, invasive species, Great Lakes.
• 2022 Set 1 Q1 (Design an investigation) — Mercury pollution, turtle nesting, soil changes.
• 2022 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Lizard abundance, island biogeography, sugarcane.
• 2021 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Pesticide resistance, IPM, wildlife impact.
• 2021 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Amphibian richness, deforestation, land development.
• 2021 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Habitat fragmentation, specialist species, land area.
• 2019 Q1 (Analyze an environmental problem and propose a solution) — Piping plovers, barrier islands, nesting habitat.
• 2019 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Oil sands, bitumen extraction, forest ecology.
• 2018 Q3 (Analyze an environmental problem and propose a solution) — Arctic food web, sea ice, polar bears.
• 2017 Q1 (Analyze an environmental problem and propose a solution) — Microbeads, plastic pollution, nitrate wastewater.
• 2017 Q3 (Analyze an environmental problem and propose a solution) — Deforestation, Haiti ecosystem services, demographics.
• 2017 Q4 (Analyze an environmental problem and propose a solution) — Hydroelectric dams, keystone species, beavers.
• 2016 Q1 (Analyze an environmental problem and propose a solution) — White Nose Syndrome, bats, infectious disease.
• 2015 Q1 (Analyze an environmental problem and propose a solution) — Everglades water diversion, phosphorus, restoration.

Unit 3: Populations

• 2026 Q1 (Design an investigation) — Climate change effects on birds, corals, Arctic species.
• 2026 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Ocelot population decline, doubling time, energy calculations.
• 2025 Set 1 Q1 (Design an investigation) — Ant biodiversity, habitat type, nonnative plants.
• 2025 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal mining, population growth, biodiversity.
• 2024 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Animal protein, land use, mealworms.
• 2023 Set 1 Q1 (Design an investigation) — GMO beans, runoff, ecological succession.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2022 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal ash, population change, water use.
• 2021 Set 2 Q1 (Design an investigation) — Soil erosion, sediment runoff, straw bales.
• 2021 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Habitat fragmentation, specialist species, land area.
• 2017 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Elephant population, K-strategists, decline rate.
• 2017 Q3 (Analyze an environmental problem and propose a solution) — Deforestation, Haiti ecosystem services, demographics.
• 2016 Q1 (Analyze an environmental problem and propose a solution) — White Nose Syndrome, bats, infectious disease.

Unit 4: Earth Systems and Resources

• 2025 Set 1 Q2 (Analyze an environmental problem and propose a solution) — El Niño, urban flooding, biome comparison.
• 2025 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Serengeti ecosystem, tectonic features, highway impact.
• 2024 Set 1 Q1 (Design an investigation) — Stream DO, BOD zones, macroinvertebrates.
• 2024 Set 2 Q1 (Design an investigation) — Ecological succession, watershed diagram, clear-cutting.
• 2024 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Animal protein, land use, mealworms.
• 2023 Set 2 Q1 (Design an investigation) — Mine restoration, plant recovery, soil runoff.
• 2022 Set 2 Q1 (Design an investigation) — Mississippi watershed, dead zone, riparian buffers.
• 2022 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Lizard abundance, island biogeography, sugarcane.
• 2022 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Urban heat island, solar panels, efficiency.
• 2022 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal ash, population change, water use.
• 2021 Set 2 Q1 (Design an investigation) — Soil erosion, sediment runoff, straw bales.
• 2017 Q3 (Analyze an environmental problem and propose a solution) — Deforestation, Haiti ecosystem services, demographics.
• 2017 Q4 (Analyze an environmental problem and propose a solution) — Hydroelectric dams, keystone species, beavers.
• 2016 Q4 (Analyze an environmental problem and propose a solution) — Soil horizons, degradation, acid deposition.

Unit 5: Land and Water Use

• 2026 Q2 (Analyze an environmental problem and propose a solution) — U.S. energy consumption, nutrient pollution, eutrophication.
• 2026 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Ocelot population decline, doubling time, energy calculations.
• 2025 Set 1 Q1 (Design an investigation) — Ant biodiversity, habitat type, nonnative plants.
• 2025 Set 2 Q1 (Design an investigation) — Common Tern, wading birds, sea level rise.
• 2025 Set 1 Q2 (Analyze an environmental problem and propose a solution) — El Niño, urban flooding, biome comparison.
• 2025 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Serengeti ecosystem, tectonic features, highway impact.
• 2025 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal mining, population growth, biodiversity.
• 2024 Set 2 Q1 (Design an investigation) — Ecological succession, watershed diagram, clear-cutting.
• 2024 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Animal protein, land use, mealworms.
• 2024 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Land use data, urbanization, bobcat conservation.
• 2024 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Drought solutions, prescribed burns, water volume.
• 2023 Set 1 Q1 (Design an investigation) — GMO beans, runoff, ecological succession.
• 2023 Set 2 Q1 (Design an investigation) — Mine restoration, plant recovery, soil runoff.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2023 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Asian carp, invasive species, Great Lakes.
• 2023 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Crude oil, gold mining, ore extraction.
• 2023 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Methane emissions, landfills, beef production.
• 2022 Set 1 Q1 (Design an investigation) — Mercury pollution, turtle nesting, soil changes.
• 2022 Set 2 Q1 (Design an investigation) — Mississippi watershed, dead zone, riparian buffers.
• 2022 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Fracking methane, groundwater overuse, saltwater intrusion.
• 2022 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Lizard abundance, island biogeography, sugarcane.
• 2022 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Urban heat island, solar panels, efficiency.
• 2022 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal ash, population change, water use.
• 2021 Set 2 Q1 (Design an investigation) — Soil erosion, sediment runoff, straw bales.
• 2021 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Pesticide resistance, IPM, wildlife impact.
• 2021 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Amphibian richness, deforestation, land development.
• 2021 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Habitat fragmentation, specialist species, land area.
• 2019 Q1 (Analyze an environmental problem and propose a solution) — Piping plovers, barrier islands, nesting habitat.
• 2019 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Oil sands, bitumen extraction, forest ecology.
• 2018 Q1 (Analyze an environmental problem and propose a solution) — Green renovation, carbon footprint, native landscaping.
• 2017 Q3 (Analyze an environmental problem and propose a solution) — Deforestation, Haiti ecosystem services, demographics.
• 2017 Q4 (Analyze an environmental problem and propose a solution) — Hydroelectric dams, keystone species, beavers.
• 2016 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Iron ore, steel production, mine waste.
• 2016 Q4 (Analyze an environmental problem and propose a solution) — Soil horizons, degradation, acid deposition.
• 2015 Q1 (Analyze an environmental problem and propose a solution) — Everglades water diversion, phosphorus, restoration.
• 2015 Q4 (Analyze an environmental problem and propose a solution) — Urban sprawl, smart growth, petroleum.

Unit 6: Energy Resources and Consumption

• 2026 Q2 (Analyze an environmental problem and propose a solution) — U.S. energy consumption, nutrient pollution, eutrophication.
• 2025 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Air pollution, gas mileage, energy efficiency.
• 2025 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal mining, population growth, biodiversity.
• 2024 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Nuclear power, natural gas, CO2 emissions.
• 2024 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Drought solutions, prescribed burns, water volume.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2023 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Crude oil, gold mining, ore extraction.
• 2022 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Fracking methane, groundwater overuse, saltwater intrusion.
• 2022 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Urban heat island, solar panels, efficiency.
• 2022 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal ash, population change, water use.
• 2021 Set 1 Q1 (Design an investigation) — Solar panels, hydroelectric power, reservoir impacts.
• 2021 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal vs gas, PM2.5, health impacts.
• 2019 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Oil sands, bitumen extraction, forest ecology.
• 2018 Q1 (Analyze an environmental problem and propose a solution) — Green renovation, carbon footprint, native landscaping.
• 2018 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Offshore wind, energy generation, revenue.
• 2017 Q4 (Analyze an environmental problem and propose a solution) — Hydroelectric dams, keystone species, beavers.
• 2015 Q2 (Analyze an environmental problem and propose a solution doing calculations) — E-waste, gold recovery, mobile devices.
• 2015 Q3 (Analyze an environmental problem and propose a solution) — Oil spill data, cleanup methods, substitutes.
• 2015 Q4 (Analyze an environmental problem and propose a solution) — Urban sprawl, smart growth, petroleum.

Unit 7: Atmospheric Pollution

• 2025 Set 1 Q2 (Analyze an environmental problem and propose a solution) — El Niño, urban flooding, biome comparison.
• 2025 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Air pollution, gas mileage, energy efficiency.
• 2025 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal mining, population growth, biodiversity.
• 2024 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Nuclear power, natural gas, CO2 emissions.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2023 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Crude oil, gold mining, ore extraction.
• 2022 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Fracking methane, groundwater overuse, saltwater intrusion.
• 2022 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal ash, population change, water use.
• 2021 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal vs gas, PM2.5, health impacts.
• 2019 Q4 (Analyze an environmental problem and propose a solution) — Park visibility, air pollutants, visitor impact.
• 2018 Q1 (Analyze an environmental problem and propose a solution) — Green renovation, carbon footprint, native landscaping.
• 2018 Q4 (Analyze an environmental problem and propose a solution) — Indoor air, biomass burning, ventilation.
• 2016 Q4 (Analyze an environmental problem and propose a solution) — Soil horizons, degradation, acid deposition.

Unit 8: Aquatic and Terrestrial Pollution

• 2026 Q2 (Analyze an environmental problem and propose a solution) — U.S. energy consumption, nutrient pollution, eutrophication.
• 2025 Set 2 Q1 (Design an investigation) — Common Tern, wading birds, sea level rise.
• 2024 Set 1 Q1 (Design an investigation) — Stream DO, BOD zones, macroinvertebrates.
• 2024 Set 2 Q1 (Design an investigation) — Ecological succession, watershed diagram, clear-cutting.
• 2024 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Animal protein, land use, mealworms.
• 2024 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Nuclear power, natural gas, CO2 emissions.
• 2023 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Manatee movement, thermal pollution, seagrass.
• 2023 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Crude oil, gold mining, ore extraction.
• 2023 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Methane emissions, landfills, beef production.
• 2022 Set 1 Q1 (Design an investigation) — Mercury pollution, turtle nesting, soil changes.
• 2022 Set 2 Q1 (Design an investigation) — Mississippi watershed, dead zone, riparian buffers.
• 2022 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Coal ash, population change, water use.
• 2021 Set 2 Q1 (Design an investigation) — Soil erosion, sediment runoff, straw bales.
• 2021 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Pesticide resistance, IPM, wildlife impact.
• 2019 Q3 (Analyze an environmental problem and propose a solution) — Ocean acidification, CO2 trends, pH levels.
• 2018 Q1 (Analyze an environmental problem and propose a solution) — Green renovation, carbon footprint, native landscaping.
• 2018 Q4 (Analyze an environmental problem and propose a solution) — Indoor air, biomass burning, ventilation.
• 2017 Q1 (Analyze an environmental problem and propose a solution) — Microbeads, plastic pollution, nitrate wastewater.
• 2016 Q1 (Analyze an environmental problem and propose a solution) — White Nose Syndrome, bats, infectious disease.
• 2016 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Iron ore, steel production, mine waste.
• 2016 Q3 (Analyze an environmental problem and propose a solution) — MSW trends, incineration, composting.
• 2015 Q1 (Analyze an environmental problem and propose a solution) — Everglades water diversion, phosphorus, restoration.
• 2015 Q2 (Analyze an environmental problem and propose a solution doing calculations) — E-waste, gold recovery, mobile devices.
• 2015 Q3 (Analyze an environmental problem and propose a solution) — Oil spill data, cleanup methods, substitutes.
• 2015 Q4 (Analyze an environmental problem and propose a solution) — Urban sprawl, smart growth, petroleum.

Unit 9: Global Change

• 2026 Q1 (Design an investigation) — Climate change effects on birds, corals, Arctic species.
• 2026 Q2 (Analyze an environmental problem and propose a solution) — U.S. energy consumption, nutrient pollution, eutrophication.
• 2026 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Ocelot population decline, doubling time, energy calculations.
• 2025 Set 1 Q1 (Design an investigation) — Ant biodiversity, habitat type, nonnative plants.
• 2025 Set 2 Q1 (Design an investigation) — Common Tern, wading birds, sea level rise.
• 2025 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Serengeti ecosystem, tectonic features, highway impact.
• 2024 Set 1 Q2 (Analyze an environmental problem and propose a solution) — Animal protein, land use, mealworms.
• 2024 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Land use data, urbanization, bobcat conservation.
• 2024 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Nuclear power, natural gas, CO2 emissions.
• 2023 Set 1 Q1 (Design an investigation) — GMO beans, runoff, ecological succession.
• 2023 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Asian carp, invasive species, Great Lakes.
• 2023 Set 2 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Methane emissions, landfills, beef production.
• 2022 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Lizard abundance, island biogeography, sugarcane.
• 2021 Set 1 Q1 (Design an investigation) — Solar panels, hydroelectric power, reservoir impacts.
• 2021 Set 2 Q2 (Analyze an environmental problem and propose a solution) — Amphibian richness, deforestation, land development.
• 2021 Set 1 Q3 (Analyze an environmental problem and propose a solution doing calculations) — Habitat fragmentation, specialist species, land area.
• 2019 Q1 (Analyze an environmental problem and propose a solution) — Piping plovers, barrier islands, nesting habitat.
• 2019 Q3 (Analyze an environmental problem and propose a solution) — Ocean acidification, CO2 trends, pH levels.
• 2019 Q4 (Analyze an environmental problem and propose a solution) — Park visibility, air pollutants, visitor impact.
• 2018 Q1 (Analyze an environmental problem and propose a solution) — Green renovation, carbon footprint, native landscaping.
• 2018 Q3 (Analyze an environmental problem and propose a solution) — Arctic food web, sea ice, polar bears.
• 2017 Q2 (Analyze an environmental problem and propose a solution doing calculations) — Elephant population, K-strategists, decline rate.
• 2016 Q1 (Analyze an environmental problem and propose a solution) — White Nose Syndrome, bats, infectious disease.
• 2016 Q4 (Analyze an environmental problem and propose a solution) — Soil horizons, degradation, acid deposition.
• 2015 Q1 (Analyze an environmental problem and propose a solution) — Everglades water diversion, phosphorus, restoration.
• 2015 Q4 (Analyze an environmental problem and propose a solution) — Urban sprawl, smart growth, petroleum.

2027 FRQ Topics Prediction

We used Phy AI + the frequency of topics above to make an educated guess on what you might see on the upcoming 2027 AP Environmental Science Exam FRQ:

• Unit 5: Land and Water Use — 36 appearances. Still the most-tested unit, hit twice in 2026. Prepare for a complex agriculture or land-management scenario requiring a proposed and justified solution.
• Unit 9: Global Change — 26 appearances. Went three-for-three on the 2026 exam — climate change integration is now effectively guaranteed in every FRQ set.
• Unit 2: The Living World: Biodiversity — 27 appearances. The 2026 investigation question tested species responses to warming; expect an experimental design on ecosystem services or biodiversity again.
• Unit 8: Aquatic and Terrestrial Pollution — 25 appearances. Eutrophication starred in 2026 Q2; point vs. nonpoint sources and bioaccumulation remain high-yield.
• Unit 6: Energy Resources and Consumption — 19 appearances. The 2026 energy-by-source graph continued the streak; expect math comparing energy sources, efficiency, or emissions.

Use Phy to start solving Science and math questions for free.

## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please credit Nerd Notes and link to https://nerd-notes.com/every-ap-environmental-sciences-apes-frq-sorted-by-unit/. **Publication:** Nerd Notes **Original URL:** https://nerd-notes.com/every-ap-environmental-sciences-apes-frq-sorted-by-unit/