...asteroids and comets. Planets formed much later.
The area In Latin America that is actually common wealth of the United States is puerto rico
The first answer is answer. not a process, so it can't be the correct answer.
The second answer refers to the process of liquids changing their state to gas- so it's also not the correct answer.
The correct answer is the last one: desertification!- this is the process when a place becomes a dry and plantles ground.
(B) The clean air act
Our five most effective pieces of environmental legislation are the Clean Air Act, the Endangered Species Act, the Montreal Protocol, the Clean Water Act, and Reformation Plan No. 3 of 1970. Because of these laws, the health of Americans and the environment they inhabit have dramatically improved.
