what type of power plants began to be built in the 1970s that concerned environmentalist for many reasons? A. WIND B. WATER C. NUCLEAR D. STEAM

C. Nuclear

Explanation:

There were 51 plants being built until the Three Mile Island catastrophe in 1979. This resulted in massive regulations placed on each facility.

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

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