Question

which type of energy releases greenhouse gases when used to make electricity?
a. natural gas
b. geothermal
c. hydroelectric
d. nuclear

Explanation:

To determine which energy source releases greenhouse gases when used for electricity, we analyze each option:

• Option A: Natural gas is a fossil fuel. When burned to generate electricity, it produces carbon dioxide (a greenhouse gas) and other pollutants.
• Option B: Geothermal energy harnesses heat from the Earth's interior. Its electricity generation process typically does not release greenhouse gases.
• Option C: Hydroelectric energy uses water flow to generate power. It does not emit greenhouse gases during electricity production (though there can be indirect emissions related to reservoir management, but generally, it's considered a low - emission source).
• Option D: Nuclear energy generates electricity through nuclear fission. It does not release greenhouse gases during the power - generation process.

So, natural gas is the energy source that releases greenhouse gases when used to make electricity.

Answer:

A. Natural gas