Global warming pose a threat to the coastal areas of the earth. Explain.

Is the sun's gravitational pull on the earth the same in all seasons of the year ? Explain.

Molecules in air in the atmoshpere are attracted by gravitational force of the earth. Explain why all of them do not fall into the earth just like an apple falling from a tree.

How global warming can be controlled?

Define Global warming. Explain the various causes of global warming. Why is it a warming to mankind?