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    Exam 5: How Ecosystems Work
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    Approximately What Percentage of the Atmosphere Is CO<sub>2</sub>
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Approximately What Percentage of the Atmosphere Is CO2

Question 16

Question 16

Multiple Choice

Approximately what percentage of the atmosphere is CO2?


A) 0.001%
B) 0.04%
C) 10%
D) 30%

Correct Answer:

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