Global warming research - need help with my thesis statement

thesis statement: global warming is a serious matter in today's society. to prtect the health of the Earth, we must first acknowledge the negative effects of global warming.

i thought this was a good thesis statement, but to my surpris iw as wrong. my teacher wrote this about it; manmade effects of global warming? can it be reversed?

Good afternoon.

What you need here is to narrow your scope. Who/what is responsible for these negative effects? Can they be reversed? How about something like, "Global warming is a serious matter in today's society. To protect the health of the Earth, we must first acknowledge the negative effects of man made global warming, and whether or not they can be reversed."

Regards,
Gloria
Moderator, EssayForum.com

ok and becasue my research paper is complete, would it be ok for me to just add an explanation at the end of each paragraph on why and how each cause is man made related?

i have 4 body paragraph topics.
I: effects on atmosphere
II: effects on agricultrue
III: effects on oceans
IV: effects on humans

If it is included in your thesis, it needs to be addressed thoroughly throughout the body of your paper. As long as you do that, it should be fine.

Regards,
Gloria
Moderator, EssayForum.com