Because of Rachel Carson's writings,
what did people become aware of as a
danger to species of birds in the 1970s?
A. air pollution
B. landfills
C. nuclear power
D. pesticides

Because of Rachel Carson’s writings, people became aware of as a danger to species of birds in the 1970s is pesticides.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.