1) The author's main purpose is to persuade you through Ethos. Trying to give you a problem, then a solution, to show that he is fair. The author is trying to present these issues so that you are aware of what is going on. He is comparing it to various countries to show what they are doing and to encourage others to do the same. Explaining that the countries with the power and authority can help, being the more developed countries.
2) Pretty much the same as the first one, except, with the smoke health part, it is to portray how people need better way's to get fuel, or it will cost the country
Answer: (3) Yes, it uses supporting evidence.
What are the words for the question?
It does not really matter which form you write in. However, writing in the third person omniscient is generally more effective for essays. If you were writing, say, a blog, you would use the first person, but in this case, I think you want to use the third person.
