文档介绍：is global warming
Global warming is the gradual rise in the Earth's temperature caused by high levels of carbon dioxide and other gases in the atmosphere.
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caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
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Greenhouse effect
The so-called greenhouse effect is short wave
solar radiation through the atmosphere into
the ground, and warming the ground after
the length of radiation being released in the
atmosphere by absorbing carbon dioxide and
other substances, thereby creating the effect
of atmospheric warming.
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Greenhouse effect
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Human activities-emission
Burning natural gas, coal, and oil
Electricity generation
Deforestation
Many factories produce long-lasting industrial gases
Population growth
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’re the effects of global warming
Effects on Humans
Effects on Wildlife
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Global warming is a danger to a human's health. Its affect on climate can adversely affect humans.
Plagues have been attributed to global warming. An increase in temperature can result in a longer life cycle for diseases.
Global warming can affect our future ability to obtain food. As climates change, plants and animals will change, leading to a change in the eating patterns of humans.
Effects on Humans
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Effects on Wildlife
Polar Bears
Require pack ice to live
Might eventually go extinct in the wild
Sea turtles
Breed on the same islands as their birth
Could go extinct on some islands as beaches are flooded
Other species may go extinct as rainfall patterns change throughout the world
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So we must take effective measures to solve this problem
What should we do?
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should do
efforts
efforts
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