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In the last two century, the world was developing sharply in many ways such as factorings, educations, buildings, and transports. Also, people were using more energy to produce the electricity and moving cars. They use oils, coals, and fossil fuel as a source of energy. That produces several harmful gasses and chemical waist which may cause the pollution. As a result of pollution, the huge problem which calls “Global Warming” is creating. It is collection of the hazard chemical materials for example, carbon dioxide and methane which produce by human activities like producing electricity. In fact, global warming is a layer from carbon dioxide and other chemicals surround the earth. It stores the heat from sunlight in the earth and prevents the reflection of them. That causes the increasing of the temperature on the earth and disaster problems. In this essay I am going to outline some important causes and effects of the global warming.   .

There are many causes of the global warming which created by humans activities. First and the most important cause is carbon dioxide. Carbon dioxide has simple contents which are oxygen and carbon. The last one is very reactive substance which has the ability to make many compounds. When the electricity produces, the carbon dioxide releases to the air. Then, it reaches the atmosphere where it compounds with other substances to produce new compounds. For example, the carbon dioxide compounds with hydrogen to produce carbonate acid. As a result of this, the rate of acid rain increased rapidly in few years. The acid rains kill plants, kill forest, pollute the sea water, pollute drink water, and cause the cohesive in the buildings. One more cause of global warming is the using of pesticides. Very common thing is to use pesticides to kill the bugs in the houses, farmers, and offices. The pesticides contain chemicals materials to kill bugs, and these chemicals have negative effect on the people and air. The chemicals which they contain can cause many diseases for people such as Lungs Cancer, and Typhoid. Also, they produce compounds which react with carbon dioxide in the atmosphere. Further cause is the nuclear waste. Many hospitals, rays experiment processes and armies programs produce nuclear waste and through it in the special places. Nuclear waste includes materials which sterilize after few months or years. Sterilization materials produce heat and some kind of rays which may affect the human health and environment. It can kill the human cells and cause cancer in the body. It affects the sands where it putted and dehydrates it. .

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