Which Statement Is Most Correct Concerning Volcanic Effects on Our

question 10

Multiple Choice

Which statement is most correct concerning volcanic effects on our atmosphere?

• A) Pollution of the atmosphere by sulfur compounds contributes significantly to acid rain.
• B) Gases from volcanoes condense to make natural fertilizer, boosting plant growth.
• C) If it were not for active volcanism there would be no free oxygen in the atmosphere.
• D) Active volcanism is responsible for maintaining atmospheric levels of nitrogen.

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