Answer- Parallel.
In-Line Answer:-
In a longitudinal wave, "Energy and the wave are moving in <u>parallel</u> direction"
(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.
Its called till just look it up
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