Which statement is most correct concerning volcanic effects on our atmosphere?
A) Active volcanism is responsible for maintaining atmospheric levels of nitrogen.
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) Pollution of the atmosphere by sulfur compounds contributes significantly to acid rain.
Correct Answer:
Verified
Q6: _ is a major dissolved volatile constituent
Q13: Volcanic bombs originate _.
A)as laser-guided,granite blocks launched
Q19: Which two factors tend to increase the
Q20: What is the direct control on whether
Q21: Oxidized, reddish, vesicle rich, mafic lapilli that
Q22: Which are usually the most abundant gases
Q23: How are volcanic conduits formed?
A)by injecting molten
Q26: Volcanic lapilli are particles _.
A)of fused flattened
Q27: What volcanoes dominate in the Galapagos, Iceland,
Q29: What volcanic environment generated both Mt.Pelee and
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