the air was cleaner before factories and cars were invented.This is because-
Answers
Answered by
1
Answer:
Now a day's the factories are built ...so the gaseous form of chemicals ....it pollutes the air....
and the time before factories build....there were nothing that pollutes the air....
I hope it will help you
Similar questions
Science,
6 months ago
Science,
6 months ago
Math,
6 months ago
Computer Science,
1 year ago
Math,
1 year ago
Environmental Sciences,
1 year ago
Environmental Sciences,
1 year ago