If poisonous chemicals from a paint company are dumped into a stream, is that an example of point-source pollution or nonpoint-source pollution *

point-source
nonpoint-source

Point-Source

Explanation: Well, according to the EPA, point-source pollution is defined as," any single identifiable source of pollution from which pollutants are discharged, such as a pipe etc.." In this example with the paint company, it is identifiable exactly where the pollution had came from hence it being an example of point-source pollution.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.