Question

question 73
increases in greenhouse gases __.
a trap heat in earth’s atmosphere.
b increase the heat exiting the atmosphere.
c prevent the sun’s energy from reaching earth.
d reflect heat from the sun into the upper atmosphere.
e releases heat into the atmosphere.

Explanation:

To solve this, we analyze each option:

• Option A: Greenhouse gases (like CO₂) trap heat in Earth’s atmosphere, causing the greenhouse effect. This matches scientific understanding.
• Option B: They don't increase heat exiting; instead, they reduce it by trapping. Eliminate.
• Option C: Greenhouse gases don't prevent Sun’s energy from reaching Earth (ozone or atmosphere layers do that, not GHGs). Eliminate.
• Option D: GHGs don't reflect Sun’s heat into upper atmosphere; they trap re - emitted heat from Earth. Eliminate.
• Option E: GHGs don't release heat; they trap existing heat in the atmosphere. Eliminate.

Answer:

A. trap heat in Earth’s atmosphere.