Question

What do you mean by global warming? State the causes and effects of global warming.

Answer 1

Global warming is increase in tem. due to green house effect.
global warming caused by CFCs..co , co2,so2 etc...

Answer 2

Answer:

Global warming is a long term rise in the average temepature of earth's climate system.

Causes of Global warming :-

Due to excess use of vehicles, huge amount of toxic gases are released into the atmosphere. The gases emitting from factories also cause pollution. These gases go up into the atmosphere. They have made holes into the ozone layer. Ultraviolet rays of sun are coming to earth. They reach to the earth and cause global warming.