Which of the following is a result of the greenhouse effect?
a. the greenhouse effect is causing the sea level to rise.
b. the greenhouse effect is melting the polar ice caps.
c. the greenhouse effect keeps the earth from becoming too hot during the day and too cold at night.
d. the greenhouse effect is ruining our environment.

A. The greenhouse effect is causing the sea level to rise. 
B. The greenhouse effect is melting the polar ice caps. 

The greenhouse effect is a gradual heating of the earth. Increasing the average temperature of the earth, even by 1 or 2 degrees can have a serious effect on global climate. When the earth heats up, it can cause melting at the polar ice caps. The rising of the sea is an indirect result of the greenhouse effect, not a direct result, so B would not be a good answer choice. 

The answer is c. they had seedshope this