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AP Environmental Science MCQs

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Practice Settings

AP Environmental Science practice questions by unit

Fiveable has 23,675 AP Environmental Science multiple-choice practice questions across 9 units, plus 504 stimulus-based question sets built around a source. Practice one unit or topic at a time.

  • Unit 1 – The Living World: Ecosystems: 917 multiple-choice questions, 43 stimulus sets
  • Unit 2 – The Living World: Biodiversity: 1,786 multiple-choice questions, 44 stimulus sets
  • Unit 3 – Populations: 2,311 multiple-choice questions, 47 stimulus sets
  • Unit 4 – Earth Systems & Resources: 1,815 multiple-choice questions, 32 stimulus sets
  • Unit 5 – Land & Water Use: 4,602 multiple-choice questions, 92 stimulus sets
  • Unit 6 – Energy Resources & Consumption: 3,686 multiple-choice questions, 49 stimulus sets
  • Unit 7 – Atmospheric Pollution: 2,096 multiple-choice questions, 43 stimulus sets
  • Unit 8 – Aquatic & Terrestrial Pollution: 3,951 multiple-choice questions, 95 stimulus sets
  • Unit 9 – Global Change: 2,511 multiple-choice questions, 59 stimulus sets

Sample AP Environmental Science practice question

Researchers measured nitrate at one well 500 meters downstream from farmland. If they instead sampled wells at 100, 300, 500, and 1000 meters monthly for a year, how would this change their understanding of nitrogen pollution impacts?

Reveal spatial and seasonal nitrate patterns showing reduced purification nearer the source.

Correct answer

Claim concentrations would decrease because sampling more locations spreads pollution

Argue results are less reliable due to unrelated hydrogeological differences among wells.

Assert annual averages would increase simply because more wells were sampled.

Explanation

Adding spatial and temporal replication reveals contamination gradients and seasonal flux. Sampling multiple distances and months lets researchers link agricultural runoff to reduced groundwater purification.

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