Sometkmes the temperature can change in a way that helps us. The greenhouse effect makes the earth appropriatate for people to live on. Without it,the earth would be freezing,or on the other hand it would be burning hot. It would be freezing at night because the sun would be down. We would not get the sun's heat and light to make the night somewhat warm. During the day,especially during the summer,it would be burning because the sun would be up with on atmosphere to filter it,so people,plants,and animals would be exposed to all the light and heat.