Question

1. substances and especially pollutants discharged into the air (2 points) *

emission
10.
congestion
emission
oppression
preposterous

Explanation:

The term "emission" refers to the release of substances, including pollutants, into the air. "Congestion" relates to over - crowding, "oppression" is about unfair treatment, and "preposterous" means absurd.

Answer:

emission