Increase in overall temperature of earth’s atmosphere is called global warming
It is caused by increase in carbon dioxide level in atmosphere
The level of carbon dioxide is increasing due to
-
Increase in Human Activities
Release of Carbon dioxide by more and more vehicles and factories -
Cutting of Trees and Forests
Trees convert carbon dioxide into oxygen
If more and more trees are cut,then level of carbon dioxide rises
How does Carbon dioxide causes Global Warming
More Carbon dioxide causes more greenhouse effect and traps more and more heat
This leads to global warming
It causes melting of glaciers due to which water level of sea rises
Many cities near sea submerge in water