英语全球变暖PPT

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Other species may go extinct as rainfall patterns change throughout the world
So we must take effective measures to solve this problem
What should we do?
The earth is our home,we have the responsibility to protect it .We must take measures to prevent global warming as eraly as possible.
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
2.What caused global warming
Natural causes
Greenhouse effect
Human reasons
Human activities-emission
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.
4.What should do
1.Individual efforts 2.National efforts
First, we should use more clean energy and less coal and oil.
Second, we should go to work on foot or by bus instead of driving a car if possible.
What should governments do?
First, governments can support research. For example, they should encourage companies to develop vehicles that cause less pollution. They should also support alternative sources of electricity from wind and water rather than from oil and coal.
Global Warming
1.What 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.
Third, we should plant more trees, because plants can turn CO2 into oxygen.
More importantly, we should form the habit of saving energy in our daily life.
Greenhouseபைடு நூலகம்effect
Human activities-emission
Burning natural gas, coal, and oil Electricity generation Deforestation Many factories produce long-lasting industrial gases
Secondly, they should make laws that limit the amount of greenhouse gases that companies can emit. Private companies should be rewarded for following these laws. They should also be punished for creating pollution.
Population growth
3.What’re the effects of global warming
Effects on Humans Effects on Wildlife
Effects on Humans
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.
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