Carbon is an element that is present in every known life form on Earth.
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Question 1 of 10
1. Question
Plants release__________, which is taken in by animals in the ecosystem.
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Question 2 of 10
2. Question
Carbon dioxide in the atmosphere is taken in by __________.
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Question 3 of 10
3. Question
______ break down the dead organisms in an ecocsystem and return ________ to the soil.
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Question 4 of 10
4. Question
When humans burn fossil fuels, they ______ carbon dioxide _____ the atmosphere.
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Question 5 of 10
5. Question
Where is most of the Earth’s carbon located?
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Question 6 of 10
6. Question
How does carbon the ecosystem through the biological carbon cycle?
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Question 7 of 10
7. Question
Plants are called as _____ because they fix carbon dioxide.
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Question 8 of 10
8. Question
Which is NOT a way carbon dioxide is returned to the atmosphere?
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Question 9 of 10
9. Question
What is a primary producers?
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Question 10 of 10
10. Question
When carbon is capture and stored for many years, the process is called
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