Question

prior to the twenty - first century, what events influenced offshore oil exploration in the united states the most?

oil spills
disruption of marine wildlife
low gasoline prices
wars in south america

question 4 1 pts
what major piece of legislation forced government agencies to prepare environmental impact statements?

clean water act of 1977
national environmental policy act of 1969
clean air act of 1963

Explanation:

For the first question, oil spills have had a significant impact on offshore oil exploration in the US prior to the 21st - century, leading to increased regulations and public scrutiny. For the second question, the National Environmental Policy Act of 1969 required government agencies to prepare environmental impact statements.

Answer:

1. oil spills
2. National Environmental Policy Act of 1969