Carbon Cycle and Atmospheric CO2
Questions
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MultiChoice
Which process removes carbon dioxide from the atmosphere?
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MultiChoice
Which process performed by animals releases carbon dioxide back into the air?
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MultiChoice
What do we call a natural feature like a forest or ocean that absorbs CO2?
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MultiChoice
How does burning fossil fuels impact the carbon cycle?
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MultiChoice
Which three fuels are classified as fossil fuels?
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MultiChoice
Where did the carbon stored in fossil fuels originally come from?
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MultiChoice
Why does cutting down forests increase carbon dioxide levels in the air?
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MultiChoice
Which global feature absorbs about 30% of the carbon dioxide released by humans?
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MultiChoice
What happens when carbon is released faster than natural sinks can absorb it?
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MultiChoice
What is the scientific term for burning matter in the presence of oxygen?
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MultiChoice
During photosynthesis, plants turn CO2 and water into oxygen and what carbon compound?
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MultiChoice
How has atmospheric CO2 changed since the Industrial Revolution?