11 mark
Which of the following is an example of a “source” in the Carbon Cycle?
Organic matter in soil
Ocean absorption
Respiration by plants and animals
Photosynthesis by trees in forests
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The Carbon Cycle (College Board AP® Environmental Science): Exam Questions
3 mins3 questions
21 mark
Which of the following is an example of a long-term carbon store?
Atmosphere
Living organisms
Soil
Fossil fuels
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31 mark
Study the table below and answer the question:
Ecosystem Type | Carbon Flux In (Gt C/yr) | Carbon Flux Out (Gt C/yr) | Net Carbon Gain (Gt C/yr) |
Tropical Rainforest | 3.5 | 1.7 | 1.8 |
Boreal Forest | 1.0 | 0.5 | 0.5 |
Desert | 0.3 | 0.4 | -0.1 |
Wetlands | 0.8 | 0.6 | 0.2 |
Ocean (Phytoplankton) | 1.2 | 0.3 | 0.9 |
Which ecosystem is most efficient at net carbon sequestration based on the table?
Tropical Rainforest
Boreal Forest
Desert
Ocean (Phytoplankton)
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