Question

Why is the greenhouse effect important to life on Earth?

A. The greenhouse effect absorbs x-rays in the winter time.
B. The greenhouse effect helps Earth’s atmosphere hold in heat.
C. The greenhouse effect makes it much colder at the North and South poles.
D. The greenhouse effect reflects harmful radiation into the upper atmosphere.

Answer 1

b

Step-by-step explanation:

Answer 2

d

Step-by-step explanation:

In simplest terms, "greenhouse gases" let sunlight through to the earth's surface while trapping "outbound" radiation. This alters the radiative balance of the earth (see Figure A. 1) and results in a warming of the earth's surface.