A good topic sentence for global warming depends on what the article or paper is about. Determine what you plan to discuss in your paper and a topic sentence will come easily.
Write the following: Some of us have no idea of how much trouble is global warming. If we don't act fast, IT CAN BE THE END OF THE WORLD!
Global warming! Let's cool it!
White Hot
global warming
No, chlorine has no effect on Global Warming.
How is global warming happening
no but they get affected by global warming
There is very little connection between global warming and the ozone layer.
An opening sentence for what! Any opening sentence depends entirely on what the rest of the writing is about. It is no good having a sentence like this. The elephant's gestation period is 22 months, the longest of any land animal. if you are writing about global warming.
Global warming is a serious threat to the future of life on our planet.
Global warming is the main cause for our drastic changes in temperature.
The sun
Global warming can be prevented if we all take part into preventing, clean up the problem areas, and educate the youngs.
Mutatis mutandis about global warming.
global warming is ruining the world and its environment
Global Warming.
The presidents campaign promised to end global warming.
global warming!!!!!!
Global warming will put an end to civilization as we know it.
True global warming does not decrease temperatures. So, either the model for global warming's effects is hokus-pokus, or global warming as presently claimed, does not exist. Some global warming followers will have you believe that global warming makes the weather "act crazy". If true, then it is not really global warming, is it.