Question

which energy source contributes least to global warming?
a. petroleum
b. solar
c. coal
d. natural gas

Explanation:

Solar energy is a renewable energy source. When harnessed (e.g., through solar panels), it does not produce greenhouse gases (such as carbon dioxide) that contribute to global warming. In contrast, petroleum, coal, and natural gas are fossil fuels. When burned, they release significant amounts of carbon dioxide and other greenhouse gases into the atmosphere, which trap heat and contribute to global warming.

Answer:

B. Solar