The ultimate source of heat in the process of global warming is a. the burning of fossil fuels b. carbon dioxide c. the sun d. greenhouse gases ! i am absolutley positive it is answer c. the ! i simply did this to others as i had trouble finding the answer.

The answer is option D.

Explanation:

At the point when individuals chop down numerous trees deforestation, this implies less carbon dioxide is removed from the environment by those plants. As the Earth's surface temperature winds up more sizzling the ocean level ends up higher. This is somewhat in light of the fact that water extends when it gets hotter.