Question

how is the increase in carbon dioxide levels related to climate change?
increased carbon dioxide only affects oceans.
increased carbon dioxide does not affect earths climate.
increased carbon dioxide cools earths climate.
increased carbon dioxide warms earths climate.

Explanation:

Carbon dioxide is a greenhouse gas. It traps heat in the Earth's atmosphere. An increase in its levels leads to more heat being trapped, thus warming the climate.

Answer:

D. Increased carbon dioxide warms Earth's climate.