Multiple Choice
Which gas is increasing the most in the atmosphere and causing the biggest threat to the world by intensifying the greenhouse effect?
A) carbon dioxide
B) carbon monoxide
C) ozone
D) fluorocarbon
E) oxygen
Correct Answer:

Verified
Correct Answer:
Verified
Q31: Match the trophic category to the correct
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Q33: The biological components of a biogeochemical cycle
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Q41: Ecological efficiency, described as the percentage of