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Copy of Global Warming
Transcript
Global Warming
Because..
Effects that could happen, if the warming continues
What can I do to reduce global warming?
- Reduce, Reuse, Recycle
- Use less heat and air conditioning
- Drive less and drive smart
- Encourage others to conserve
and..
In conclusion, scientists are not sure what causes the global warming, but they know that it is there.
Who cares?
The End..
Thanks for watching
If the global warming is a natural process,
why is there so much fuss and feathers about it?
Global warming =
increase of average temperature on earth
It is a natural process
Started 18,000 years ago
Humans didn't cause global warming
Ice Age
15,000 - 20,000 years
global cooling
warm climate
100,000 years
global warming
Ice Age
Earth warms up more rapidly
human causes
natural causes
burning "fossil fuels",
like gasoline, coal, and natural gas
Possiblilities:
- Explosion on the sun ("sun spots")
- Vulcanic eruptions on a massive scale
- Changes in the earth orbit
- Changes in earth's orientation toward the sun
- Explosions caused by large meteors hitting the earth
Rise of the sea level between 7 and 26 inches
(caused by melting poles)
Some impacts of increasing temperatures are already happening
melting ice on the earth's poles
decline of Adelie penguins on Antarctica
sea level rise became faster
over the last century.
from 32,000 breeding pairs to 11,000 in 30 years
- Spruce bark beetles have boomed in Alaska thanks to 20 years of warm summers
- they chewed up 4 million acres of spruce trees
Hurricanes and other storms are likely to become stronger
Floods and droughts will become more common
Diseases will spread
Plant a tree!
Global warming =
increase of average temperature on earth
It is a natural process
started 18,000 years ago
humans didn't cause global warming
100,000 years
15,000 - 20,000 years
global warming
global cooling
Ice Age
warm climate
Ice Age
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