Final answer:
Rachel Carson's 'Silent Spring' is centered on the issues caused by the chemical industry's use of pesticides, leading to ecological harm and health concerns.
Step-by-step explanation:
Rachel Carson's book Silent Spring primarily focuses on the environmental problems associated with the chemical industry, particularly the widespread use of pesticides like DDT. Carson highlighted the adverse ecological and health effects of these chemicals, including their role in wildlife deaths and their potential to cause human illnesses such as cancer. Her work played a crucial role in raising awareness about environmental issues and laid the groundwork for the ban of DDT in U.S. agriculture in 1972.