Mercury is an environmental pollutant that is produced by the burning of fossil fuels and can be toxic to wildlife and humans. What does this show
about the impact of chemicals on the environment?
A. The beneficial effects people get from chemicals may have
unintended harmful effects on the environment.
B. The harm chemicals could have on the environment outweighs the
benefits that people get from the chemicals.
C. All chemicals that people introduce into the environment are
harmful.
D. People cannot control the negative effects of chemicals on the
environment.