JayJuen

=The temperature of the earth has risen by 0.5c over the last 100 years. = =Scientists from around the world say in the past 100 years the average gobal air temperature has risen by more than 0.6C .During the 20th century the sea level has risen by 10-20cm mostly due to melting glaciers and ice.=

[[image:artic.jpg align="right"]]In the next 100 years the sea level could rise by as much as 85cm.In the Artic the average tempertures have risen by nearley twice as fast as the rest of the world.
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===the ozone layer is like a thin shield high up in the sky.It protects the life on Earthfrom the sun's ultraviolet rays. In the 1980's, scientists started to begin finding clues that the ozone layer was going away or being depleted. ===