Question

Pollutants are __________ substance.​

Answer 1

Pollution can be chemical substances, noise, heat, light, foreign objects, or anything that does not belong in an environment. ... Pollution has been happening since man began to start fires but up until the Industrial revolution in the 1800's, nature could handle the amounts of pollution humans were putting out.

Answer 2

Answer:

harmful

Explanation:

Pollutants are harmful substance.