Boys and girls, do you understand how much environmental knowledge, know? Protecting the environment is the human consciously protect natural resources and make them get reasonable use, to prevent the pollution of natural environment and damage. Now, the earth environment gradually destroyed. Because there are many environmental destruction, someone for reason, there are natural causes. But most people are deforestation, litter and other factors.

　　As far as I know from the Internet, 30 years from 1950 to 1950, more than half of the world's forests have been destroyed, one half of the forest land into desert in Africa. Green vegetation is present in the human nature of "being" of life. World the 50 years after the 20th century, however, damage to people and animals live in green environment, green vegetation is in a recession, the global soil loss to increase to 25.4 billion tonnes a year, desertification, soil is at an annual rate of 5 to 7 square kilometers expanded rapidly.

　　In 1998, through China the earth in the Yangtze river, the songhua river, such as large rivers, lost the past gentle beautiful smiling face, out of ferocious ferocious terror. Raging storms, the roaring river, rolled up the flood peak, and again engulfed entire villages, pieces of land, cities and counties, each factory, a school... Oh my god, this is what a loss!

　　In recent years, because humans cut down trees, also damage the environment, make the vegetation destroyed, causing the phenomenon of land desertification, soil erosion, etc. Trees also gradually reduce, then, to absorb carbon dioxide, large amounts of carbon dioxide make the air become warm, creates the world present situation: the greenhouse effect.

　　Campus is always has a beautiful scenery, now everyone don't protect the environment, it makes our environment destruction. Look at the corner of the street is filled with plastic bags, cigarette butts. On the flower beds in the neighborhood is filled with dirt, we should protect everything we have good resources. I have people here don't protect environment under the condition of reverie: one day, the tree my grandfather in the beautiful scenery in a rest, suddenly to a few people, to prepare for a picnic here. Not for a moment here a beautiful environment becomes dirty, but this a few people or ignored. "The men finally walked" the tree grandpa sad cried, alas! The men got the cigarette butts on the grass, the ground filled with plastic bags, bottle. A few days later the tree grandpa dyspnea died because of bad environment.