Once the clean air act was passed in the United States, the level of pollution from power plants . Went up (increased) Went down (decreased) Stayed the same as before

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

i thinking chemical change

cells spend most of their time in interphase