Question

volcanoes play an important role in determining climate change. when a volcano erupts it throws out large volumes of ________ gas and ash into the atmosphere which can influence climatic patterns for years.

○ carbon monoxide
○ oxygen
○ nitrogen
○ sulfur dioxide

Explanation:

Volcanic eruptions release significant amounts of sulfur dioxide ($\ce{SO_2}$) gas. Sulfur dioxide can form aerosols in the atmosphere that reflect sunlight, cooling the climate, and also contribute to acid rain. Carbon monoxide is not the main gas from volcanoes in terms of climate impact, and oxygen and nitrogen are major atmospheric gases not primarily released in large climate - impacting amounts by volcanoes for this context.

Answer:

Sulfur dioxide