2. Global warming yang lu

3. As we all know,global warming has become a serious problem all over the world.Now let,s know more about it.

4. The background of global warming At present, with the development of economies around the world we may feel that the climate is becoming more and more warmer. It’s very serious, but many people can’t recognize that because they only think about themselves. They don’t mind the climate becoming warmer. They don’t mind the ice melting. They don’t mind how many animals become extinct. They don’t mind how many coastal cities become flooded. They don’t mind…… They are wrong. Global warming can have many strong influences for us. For example: Global warming will make trouble with physiology. People will become more easily ill and even breed new diseases. People will pay more and more money for health care but more and more people die. No amount of money or even the best doctors, wll not be able to save your life. Even if you aren’t dying, you will feel sad and alone. So many relatives and friends’ death will make you want to kill yourself.

5. Global warming will give the air and ocean huge power. Thus making large or even super typhoons, hurricanes, tsunamis and other disasters. Many houses will be destroyed. Many place will flood. We will be faced with more and more disasters, damning more and more money and life. Rising temperatures will not only create higher sea level, but also will cause droughts. Large-scale areas will become arid and thus food production will be less. We will be without food. People around the world will face food shortage.

7. What's the cause of global warming Natural Causes Natural causes are causes created by nature. One natural cause is greenhouse gas. Greenhouse gases, such as carbon dioxide (CO2), methane (CH4), water vapor, and fluorinated gases, act like a greenhouse around the earth. This means that they let the heat from the Sun into the atmosphere, but do not allow the heat to escape back into space. The more greenhouse gases there are, the larger the percentage of heat that is trapped inside the earth’s atmosphere. Another natural cause is that the earth goes through a cycle of climate change. This climate change usually lasts about 40,000 years.

8. Man-made Causes Man-made causes probably do the most damage. There are many man- made causes. Pollution is one of the biggest man-made problems. Pollution comes in many shapes and sizes. Burning fossil fuels is one thing that causes pollution. Fossil fuels are fuels made of organic matter such as coal, or oil. When fossil fuels are burned they give off a green house gas called CO2. Also mining coal and oil allows methane to escape. How does it escape? Methane is naturally in the ground. When coal or oil is mined you have to dig up the earth a little. When you dig up the fossil fuels you dig up the methane as well.

9. Another major man-made cause of Global Warming is population. More people means more food, and more methods of transportation, right? That means more methane because there will be more burning of fossil fuels, and more agriculture. Now your probably thinking, "Wait a minute, you said agriculture is going to be damaged by Global Warming, but now you're saying agriculture is going to help cause Global Warming?" Well, have you ever been in a barn filled with animals and you smell something terrible? You're smelling methane. Another source of methane is manure. Because more food is needed we have to raise food. Animals like cows are a source of food which means more manure and methane. Another problem with the increasing population is transportation. More people means more cars, and more cars means more pollution. Also, many people have more than one car.

10. Since CO2 contributes to global warming, the increase in population makes the problem worse because we breathe out CO2. Also, the trees that convert our CO2 to oxygen are being demolished because we're using the land that we cut the trees down from as property for our homes and buildings. We are not replacing the trees (an important part of our eco system), so we are constantly taking advantage of our natural resources and giving nothing back in return.

11. What should we do to slow down global warming ? To Stop Global Warming calculator shows you how much carbon dioxide you can prevent from being released into the atmosphere and how much money you can save by making some small changes in your daily life. Here are many simple things you can do in your daily life.

12. Do not leave appliances on standby Use the "on/off" function on the machine itself. A TV set that's switched on for 3 hours a day (the average time Europeans spend watching TV) and in standby mode during the remaining 21 hours uses about 40% of its energy in standby mode. Put on a Sweater Instead of turning up the heat in your home, wear more clothes Save 1,000 lbs. of carbon dioxide and $250 per year.

13. Move your thermostat down 2° in winter and up 2° in summer Almost half of the energy we use in our homes goes to heating and cooling. You could save about 2,000 pounds of carbon dioxide a year with this simple adjustment. Use Recycled Paper Make sure your printer paper is 100% post consumer recycled paper. Save 5 lbs. of carbon dioxide per ream of paper.

14. Cover your pots while cooking Doing so can save a lot of the energy needed for preparing the dish. Even better are pressure cookers and steamers: they can save around 70%! ring Cloth Bags to the Market Using your own cloth bag instead of plastic or paper bags reduces waste and requires no additional energy. Use a clothesline instead of a dryer whenever possible You can save 700 pounds of carbon dioxide when you air dry your clothes for 6 months out of the year.

15. Plant a tree A single tree will absorb one ton of carbon dioxide over its lifetime. Shade provided by trees can also reduce your air conditioning bill by 10 to 15%. Take a shower instead of a bath A shower takes up to four times less energy than a bath. To maximize the energy saving, avoid power showers and use low-flow showerheads, which are cheap and provide the same comfort. Use less hot water It takes a lot of energy to heat water. You can use less hot water by installing a low flow showerhead (350 pounds of carbon dioxide saved per year) and washing your clothes in cold or warm water (500 pounds saved per year) instead of hot.

16. Reduce Garbage Buy products with less packaging and recycle paper, plastic and glass. Save 1,000 lbs. of carbon dioxide per year. Buy locally grown and produced foods We ofen buy all kinds of foods from the supermarket,they are mostly transported from far away from our city. Buying locally will save fuel and keep money in your community. Encourage the switch to renewable energy Successfully combating global warming requires a national transition to renewable energy sources such as solar, wind and biomass. These technologies are ready to be deployed more widely.Then we will save more energy.

17. Global warming is a huge problem.Everyone should protect our earth by do everything we can do. let's make a future for our descendant.

18. Thank you