GLOBAL WARMING

GLOBAL WARMING IS THE OBSERVED AND PROJECTED INCREASE IN THE AVERAGE TEMPERATURE  OF EARTH'S ATMOSPHERE AND OCEANS ESPECIALLY A SUSTAINED INCREASE THAT CAUSES FOR THE CLIMATIC CHANGES.                               ACCORDING TO THE FOURTH ASSESSMENT REPORT PUBLISHED 2007 BY THE INTERGOVERNMENTAL PANAL ON CLIMET CHANGE GLOBAL SUFACE TEMPERATURE INCREASED 0.74+/_ 0.18 DEGREE CELSIUS.MOST OF THE TEMPERATURE INCREASE AT THE TIME OF MID 20th CENTURY WAS ESPECIALLY CAUSED BY GREAN HOUSE EFFECT.

• EFFECTS OF GLOBAL WARMING:
• INCREASE IN THE EARTHS TEMPERATURE BY ABOUT 3-5 D CELSIUS PER YEAR.
• RISE OF SEA LEVEL BY 25 METERS.
• LIEDS TO MELTING OF LAND ICE.
• CAUSES  OF GLOBAL WARMING:
• GREEN HOUSE EFFECT.