English, asked by m2oona1eceejhu, 1 year ago

Global warming speecch for 2 minutes ..

Answers

Answered by plopol
1
The greenhouse effect and global warming are issues that are talked about by geologists 
all the time. The greenhouse effect is a natural process that keeps the earth at temperatures that 
are livable. Energy from the sun warms the earth when its heat rays are absorbed by greenhouse 
gasses and become trapped in the atmosphere. Some of the most common greenhouse gasses are 
water vapor, carbon dioxide, and methane. If there were no greenhouse gasses, very few rays 
would be absorbed and the earth would be extremely cold. When too many rays are absorbed, the 
earth?s atmosphere starts to warm, which leads to global warming. Global warming can lead to 
many problems that affects the environment in which we live. 

     In order to talk about global warming, we must first learn what causes the greenhouse 
effect. A lot of the rays from the sun are absorbed by water vapor that is naturally in our 
atmosphere. Water vapor accounts for ?80 percent of natural greenhouse warming. The 
remaining 20 percent is due to other gasses that are present in very small amounts? (Murck, 
Skinner and Porter 488). Carbon dioxide is also a big absorber of the sun?s heat rays. Humans 
can cause a lot of carbon dioxide to be released. Every time we burn fossil fuels, we release more 
carbon dioxide. Emissions from cars also increase the amount of carbon dioxide in the 
atmosphere. If there is more carbon dioxide in the atmosphere more rays from the sun are 
absorbed. This will cause the atmosphere and the earth?s temperature to warm. The warming of 
the earth will cause the oceans to become warmer. When they heat up, more water is evaporated, 
causing more carbon dioxide to be released into the atmosphere. Once this process starts, it is 
extremely hard to control. If the temperature keeps rising, more carbon dioxide will be released. 
Another greenhouse gas is methane: ?Methane absorbs infrared radiation 25 times more 
effectively than carbon dioxide, making it an important greenhouse gas despite its relatively low 
concentration? (490). There have been many studies on how methane is released into the 
atmosphere. Methane in the atmosphere is ?generated by biological activity related to rice 
cultivation, leaks in domestic and industrial gaslines, and the digestive process of domestic 
livestock, especially cattle? 
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