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AP®Environmental ScienceCollege BoardExam QuestionsUnit 1: The Living World: EcosystemsTerrestrial Biomes

Terrestrial Biomes (College Board AP® Environmental Science): Exam Questions

4 mins4 questions
11 mark
World map highlighting four locations: A in Western USA, B in Central USA, C in East Africa, and D in Eastern Russia. Background is light blue.

Which letter represents the biome characterized by large amounts of permafrost?

  • A

  • B

  • C

  • D

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21 mark
World map highlighting regions A in western USA, B in eastern USA, C in central Africa, and D in northern Russia, on a blue background.

Which letter represents the biome characterized by dry scrub and frequent wildfires?

  • A

  • B

  • C

  • D

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31 mark
World map with shaded boxes marked A in the USA, B in eastern USA, C in eastern Africa, and D in eastern Russia.

Which letter represents a hot, dry biome characterized by a mixture of grasses and woodland?

  • A

  • B

  • C

  • D

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41 mark

Chaparral ecosystems experience more frequent and intense wildfires after a wet season. Which of the following best explains this phenomenon?

  • Increased rainfall leads to greater plant growth, which later provides more dry fuel once the wet season ends, increasing wildfire risk. 

  • Wet conditions cause soil erosion, which makes plants more flammable and prone to ignition.

  • Rainfall increases humidity levels year-round, leading to drier vegetation and a higher chance of fire outbreaks.

  • More precipitation reduces the frequency of wildfires by keeping vegetation too wet to burn.

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