Writing Feedback / Global warming is the serious problem in the world : IELTS Task 2 [3]

WellI am also not very good in writting and joined the page for improvement.
just what I can suggest you,
1-With regard to the exponential increase of gases in the atmosphere, those results in the rise of global temperature
With regard to the exponential increase of gases in the atmosphere eventually leading to the rise of global temperature

2- governments and individuals have to get involved
I have read that not to use word "GET" in IELTS writing task 2

3-have to arouse their self awareness to keep the earth, and
have to arouse their self awareness to keep the earth ___?? , and

Well, need some expert opinion as I am also a learner.