Question

How can volcanic eruptions contribute to global climate change?

Answer 1

How can volcanic eruptions cause the climate to become cooler?

A. Volcanic aerosols neutralize the effect of greenhouse gases.

B.Volcanic ash and dust become condensation nuclei for precipitation.

C. Volcanoes release carbon dioxide, a greenhouse gas that acts to cool the climate.

D. Volcanic ash, dust, and aerosols increase the solar radiation reflected into space.

Step-by-step explanation:

The Answer is D. Volcanic ash, dust, and aerosols increase the solar radiation reflected into space.

The atmosphere always reflects a fraction of solar radiation into space and transmits the remainder to the surface. Ash, dust, and aerosols (very fine particles) from volcanoes can increase the reflected radiation.

Answer 2

In 1784, Benjamin Franklin made what may have been the first connection between volcanoes and global climate while stationed in Paris as the first diplomatic representative of the United States of America. He observed that during the summer of 1783, the climate was abnormally cold, both in Europe and back in the U.S. The ground froze early, the first snow stayed on the ground without melting, the winter was more severe than usual, and there seemed to be "a constant fog over all Europe, and [a] great part of North America."

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