Question

what is a global warming? what are its causes.

Answer 1

when the snow melt from the Glacier and the water level increases it is known to be as global warming
=the causes of Global Warming are
1 it causes to floods.
2 they increase the temperature
3 they are caused by the deforestation
4 they are caused by burning the fuel

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.