Which of the following does not contribute to increased air quality?

a. the clean air act
b. hybrid cars
c. use of cfcs
d. energy-efficient appliances

Over half of the african-american population in the united states live in

What can happen to solar radiation when it enters earth’s atmosphere? check all that apply. it is absorbed by earth. it is reflected by clouds. it is reflected by glacial ice. it is condensed into visible light. it is amplified by water molecules.

Summarize the president's/vice president's roles and responsibilities in 8 sentences