Question

question 11
which statement about the characteristics of major greenhouse gases is true?
automobile usage produces large amounts of methane.
deforestation increases carbon dioxide produced by photosynthesis.
carbon dioxide is one of the most significant greenhouse gases.
the burning of fossil fuels does not produce greenhouse gases.

Explanation:

Automobiles mainly produce carbon - monoxide, carbon - dioxide, and nitrogen oxides, not large amounts of methane. Photosynthesis consumes carbon - dioxide, and deforestation reduces the amount of carbon - dioxide consumed by plants, not increases its production by photosynthesis. Fossil fuel burning is a major source of carbon - dioxide, a significant greenhouse gas. Carbon - dioxide is indeed one of the most significant greenhouse gases.

Answer:

Carbon dioxide is one of the most significant greenhouse gases.