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Humans have greatly increased the level of in the atmosphere. O A. argon B. oxygen O . C. carbon dioxide O D. nitrogen


Sagot :

Answer:

Humans have greatly increased the level of in the atmosphere. O A. argon B. oxygen O . C. carbon dioxide O D. nitrogen

=carbon dioxides

Answer:

C

Explanation:

Think of the greenhouse effect. The burning of fossil fuels causes carbon dioxide emissions.