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環(huán)保題材英語手抄報
環(huán)保是當今世界的主題，保護環(huán)境我們刻不容緩。下面小編帶來的是環(huán)保題材英語手抄報，希望對你有幫助。
In recent years, the whole world in the temperature of the global warming is carbon dioxide, methane and Nitrous Oxide's content too much. Experts estimate that the temperature will grow by 1 this year. 5 - 4 degrees centigrade. It's all caused by the constant destruction of the environment.
The car is running on the road, constantly discharging the exhaust. There is no sense of environmental protection at all. Take more bicycles and reduce emissions. If you have a traffic jam at the traffic lights, you put down the window, and immediately a discarded smell comes in and coughs you. Factory chimneys, did not give up a second time to the blue sky, the sky smoke, dyed black. One night, when I went to Guangzhou, I saw a chimney near the road exhaust the air to the sky. The exhaust gas was darker than the dark sky.
The temperature of the world has been warming, and agriculture has been greatly affected. The production of 1 tons of wheat is 1000 tons of water and the production of 1 tons of corn is 1200 tons of water, while the production of 1 tons of rice is 2000 tons of water. The total amount of water per capita in Northwest China is only 1781 tons. It is still much worse than the average per capita 2200 tons in the country. The lack of water resources has a serious impact on agricultural production, coupled with natural disasters, which is more serious.
The rise of global temperature has resulted in the melting of glaciers and mountain glaciers on the continent, and the increase in the total amount of sea water. At the same time, the temperature of the sea is also rising, and the sea level is rising because of the expansion of the sea water. When the temperature rises 1 degrees Celsius, the sea level will rise by 10 centimeters, and the large cities of the global 3/4 and the population of 40% are concentrated in areas less than 60 kilometers from the coast.
Let me protect the earth and let the mother of the earth restore his original appearance. As long as we ride more bicycles, trees, less chemicals... It can make a great contribution to the earth's mother. Protect the earth from me and start from my side.
環(huán)保題材英語手抄報2
Scientists have studied the effects of noise on biology and human beings in an all-round way. If the mouse is in a 160 decibels environment, it will die in a few minutes. At 5 meters of the jet engine, a man becomes deaf in a few minutes. It is generally believed that 40 decibels is normal environmental sound, and the above is harmful noise.
The harm of noise is summarized in the following aspects.
(1) noise disturbance to sleep: the time of human being nearly 1/3 is spent in sleep. Sleep is an important condition for people to eliminate fatigue, restore physical strength and maintain health. But environmental noise can make people unable to sleep or wake up, in this respect, the elderly and patients are more sensitive to noise interference. When sleep is disturbed, both work efficiency and health are affected.
(2) the interference of noise to language communication: the influence of noise on language communication comes from the effect of noise on hearing. This influence reduces communication efficiency and damages people's language listening. Research shows that 30 decibels is a very quiet environment, such as the studio, the hospital should satisfy this condition. 40 decibels is a normal environment, for example, the general office should maintain this level. 50-60 decibels belonged to the noisy environment, when the mental labor was affected and the conversation was disturbed. When the phone calls, the noise is 65 decibels, and the conversation is difficult; at 80 decibels, it is not clear. When the noise reaches 80-90 decibels, the voice can be raised about 0.15 meters in order to speak. If the number of noise decibels is high, it is not possible to have a conversation.
(3) noise damage hearing: when people are in a noisy environment for a short time, even if they leave the noise environment, their ears will cause short-term hearing loss, but when they return to a quiet environment, they will recover in a relatively short time. This phenomenon is called auditory adaptation. If unprotected in a strong noise environment for a long time, the recovery of auditory sensitivity will be prolonged after leaving the noise environment. After a few hours or more hours, hearing can be restored. The loss of hearing recovery is called hearing fatigue. With the aggravation of hearing fatigue, the hearing function is not recovered. Therefore, the prevention of noise induced deafness should first prevent the occurrence of fatigue. The statistics showed that the incidence of deafness increased significantly in a noisy environment over 90 decibels for a long time.
(4) noise can cause a variety of diseases: noise, in addition to hearing damage, can cause other personal injuries. Noise can cause restlessness, nervous mood, faster heartbeat and higher blood pressure. Noise can also reduce the secretion of saliva and gastric juice, reduce gastric acid, and thus be susceptible to gastric ulcers and duodenal ulcers.
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