ENV 1111 Lecture : ENVIRONMENT - Environment pollution

Which are the main concerning sources of water pollution?

1. what is pollution

How can carbon dioxide be considered a pollutant when it is a natural component of air?

a. Carbon dioxide is considered a pollutant even though it is a natural component of air, because it is harmful to all living organisms.

b. Carbon dioxide is considered a pollutant when larger concentrations than normal are present in the air as a result of human activity.

c. Carbon dioxide is considered a pollutant, because it forms harmful chemicals when mixed with other pollutants in the air.

d. Carbon dioxide cannot be considered a pollutant under any circumstances.