Question

Which of the following is the best example of a way human lifestyles affect environmental systems?
a. Agriculture causes water pollution when fertilizers and pesticides flow into lakes and rivers.
b. Burning fossil fuels causes air pollution by decreasing water vapor in the atmosphere.
c. Using aerosol sprays causes acid rain by increasing ozone (O3) in the atmosphere.
d. Using radioactive materials causes ground pollution when chlorofluorocarbons (CFCs) seep into the ground.

Answer 1

i think its either a or b, what do u think it is?

Answer 2

im going with a, is that okay?

Answer 3

yes becoz they asking abu daily lifestyle so we can say that it is A

Answer 4

I think all the answers except A are incorrectly associating a pollutant and its effects. For example, b) claims that burning fossil fuels decreases water vapor in the atmosphere - water vapor isn't pollution. Burning fossil fuels causes air pollution by emitting greenhouse gases, nitrous oxides, etc. It's the same if you look at c) and d) - aerosol sprays used to have CFCs in them, which deplete the ozone layer (not increase ozone), and d) radioactive materials and CFCs aren't the same.
So it's not actually about which effect is worse, I think it's asking whether you understand the causes and effects of different pollutants so you can pick the only 'correct' answer.