Volcanic eruptions and emissions from vegetation are the natural causes of which phenomenon? A. acid rain B. ozone layer depletion C. ozone layer hole D. global warming E. increase in sea levels

The answer would be-

A. Acid Rain

Acid Rain is the natural cause which causes volcanic eruptions and emissions from vegetation.

Explanation:

The volcanic eruption is a natural phenomenon that is caused due to the liberation of the lava from the heap of the earth along with the gases. The volcanic eruption results in causing major damages to the vegetation lying above the erupted crater of the volcano.

This results in the immense release of gases such as "carbon dioxide, carbon monoxide, sulphur dioxide, hydrogen chloride, hydrogen fluoride, methane and ammonia" and these gases are major pollutants of the air. When these gases react with water vapour that are present in the atmosphere, they condense in the form of acid rain.