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AP Environmental Science Natural CO₂ & Particulates

Practise natural-emissions questions by identifying CO₂ from respiration, decomposition and volcanoes alongside other particulate sources.

Syllabus
Effective Fall 2025
Course
AP Environmental Science

Exam points

  • identify the governing concept or relationship in the problem
  • justify the result with equations, diagrams or contextual evidence

STB-2.D—Describe natural sources of CO₂ and particulates question 1

[Maximum number: 1]

A student enters a science fair competition with a project on demonstrating how CO2\mathrm{CO}_{2} and particulates come from a variety of natural sources. Which of the following would her experiment most likely conclude?

A

CO2\mathrm{CO}_{2} comes from decomposition and respiration and particulates from pollen and dust.

B

Volcanic eruptions do not produce CO2\mathrm{CO}_{2} or particulates.

C

CO2\mathrm{CO}_{2} is produced from nuclear energy power plants.

D

Particulate matter is completely anthropogenic.

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