Which of the following is the best example of a way human lifestyles affect environmental systems?
a) using aerosol sprays causes acid rain by increasing ozone (o3) in the atmosphere.
b)agriculture causes water pollution when fertilizers and pesticides flow into lakes and rivers.
c) burning fossil fuels causes air pollution by decreasing water vapor in the atmosphere.
d)using radioactive materials causes ground pollution when chlorofluorocarbons (cfcs) seep into the ground

All of the answer choices relate a source of pollution with its effect; however, all of them except one is correct. The answer is B.
Option A states that the use of aerosol sprays increases ozone; however, the effect is the opposite. Moreover, the depletion does not result in acid rain. In option C, although fossil fuels do cause air pollution, they do not do so by reducing the water vapor content. Instead, they actually increase water vapor content. Their effect is of increasing the content of carbon dioxide, sulfur dioxide and nitrogen dioxide. Finally, CFCs cause ozone depletion, they do not seep into the ground.

The correct answer is b