[a]. the Moon.
[b]. seasons.
[c]. equator.
[d]. the sun.
Given those answer options, answer the question: Answer the following question given this paragraph: Earth is warmed by energy that radiates from the sun. Earth radiates some of the energy back into space. Greenhouse gases (GHGs) trap much of the re-radiated energy, causing an increase in the temperature of the atmosphere close to the surface. Q: What is the major source of warmth for earth? A:
A:
[d].