Question

how can scientists help reduce air pollution?

Answer 1

Scientist are the biggest source of reducing air pollution.
They can help by introducing new machines which do not produce harmful smoke but reduce the amount of harmful gases from the air.
They can introduce new vehicles which do not create a lot of smoke.
They should use those chemicals which do not produce harmful gases which can contribute in increasing air pollution.

Answer 2

Answer:

scientists is reducing pollution

Explanation:

by introducing new machines which do not produce harmful gasses