Respect teacher, dear classmates, good morning!
Now, soil erosion is serious in our country, according to satellite remote sensing in 1992, covers an area of 179 soil and water loss. 4 square kilometers, 18 of the total land area. 7%. Desertification rapid development, desertification of land has reached 149 square kilometers, 15 of the total land area. 5%. Water pollution are also significantly increase, 42% of the city water is polluted.
The embankment with a small river near my house. It turns out that the water in the river bottom, the water and the freedom of fish were swimming. However, people often put the rubbish into the river to the, don't care for the environment. So lead to the river run gray, also an unpleasant smell, the fish died in the river.
The earth of the water resources, forest resources, biological resources, atmospheric resources... Could have continuous regeneration, make contributions to mankind over a long period of time. But people at random destruction of natural resources, not only make them not renewable, poses a serious threat to human existence, such as: forest resources will be long-term workers with down from one generation to another, but people only candy tree trees, not the hills near the bald, also can cause soil erosion, affect the preservation of water resources. If there is no water, we can survive?
The earth generous to raise our family. Shouldn't we should protect the ecological environment of the earth? Let us together to maintain the ecological balance of the earth, let the earth bring benefits to human better, make contributions to mankind!
My speech finished, thank you.
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