sometime the temperature can change in a way that helps us. the greenhouse effect makes the earth appropriate 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 no atmosphere to filter it, so people,plants,and animals would beexposed to all the light and heat. Although the greenhouse effect makes the earth able to have people living on it, if there gets to be too many gases, the earth can get unusually warmer, and many plants, animals, and people will die.They would die because there would be less food(plants like corn, wheat, and other vegetables and fruits).