<span>A fast-flowing river of air that forms when two air masses of very different temperatures meet is called a jet stream :)</span>
Answer: The answer is rock.
Explanation: A rock is a a solid substance in which it is composed of large quantities of one mineral, or contains 2 or more minerals.
Very true.
It harms our atmosphere, thus effecting climate. Which can kill and sometimes nearly cause organisms to go extinct. It corrupts our air, which is very unhealthy, and can cause lung cancer, and harm our breathing patterns. Which can shorten life expectancy.
Stay clean, and I hope this helps! :) <span />