Humans dont't know to stop,take the without measure

"what is the most dangerous animal in the world?" The question is written on the wall of a cabin at the Ecolt Wildlife Park in Germany. What is your answer to such a question? Perhaps you will naturally think of tigers, lions or cobra poisons. But zoo officials tell visitors that the answer to this question can be found when you open a cabin with the door open. When visitors carefully open the door, all they see is a big mirror, and the visitor's face appears in the mirror. It clearly tells you that the most dangerous animal in the world is man himself.

For a long time, the human being is the master of the earth, the conqueror of nature, and the highly developed brain has given man the means to destroy everything, so human beings seize the resources of nature at will. Forests are overcut, wild animals are ruthlessly hunted, natural resources are exploited arbitrarily, waste water is discharged at will, and so on. But every time man conquers the concession, nature retaliates, from Hurricane Katrina to a snowstorm in California, from floods in the Bengal Plains to the hot heat that swept the Mediterranean coast. From extensive drought in Africa's grasslands to the Indian Ocean tsunami. Every vengeance teaches a bitter lesson and makes people feel hard.

As early as 1996, the United Nations Environment Programme warned that the surface soil was losing at a rate of 20 billion tons a year, that forests were disappearing at a rate of 4.5 million hectares per year, that the Antarctic ozone hole was gradually expanding and that ultraviolet radiation was increasing on the ground; 120 million people live in muddy air; 1.2 billion live without water. 12 percent of mammals and 11 percent of birds are endangered. Groups of data are shocking and alert to mankind: if humans continue to plunder, the earth will be destroyed in their own hands!