AP Environmental Science

Answer: B - Rachel Carson wrote Silent Spring about the emerging environmental crisis.

Key Takeaway: During the 1960s and 1970s, environmental activism truly took off. Rachel Carson’s Silent Spring spoke of the warnings involving the use of pesticides. The warnings of Carson and her colleagues, such as Paul Ehrlich, were distinctly different from the call for land preservation and natural beauty argued by John Muir and Theodore Roosevelt in the 1930s. Carson and Ehrlich’s threats were real and demanded immediate action. In 1970, Congress passed the Clean Air Act and created the Environmental Protection Agency (EPA) to help deal with the environmental problems of the era.