The Earth Is Our Only Home
Some people imagine to leave this fearful world, only to come down to earth. Scientists tell us that of all the stars known in the vast universe, the earth is the only planet on which human beings can survive. But now we are facing the risky problems concerning our existence on earth.
Worldwide environmental deterioration (恶化) is alarming. The earth is plagued with population explosion, energy crisis, lack of food, housing problem and environmental pollution. During the process of industrialization, human beings are pursuing crazily the benefits from the economic growth. Now we have suffered from the results. The overuse of natural resources has affected ecosystem(生态系统) on earth.
Clearly, the deterioration of environment has posed a great threat to human survival. Placing our hope solely on finding another earthlike planet cannot bring us a bright future. It's time for us to realize the urgency of the situation. Today we must take immediate actions in order to preserve a hopeful tomorrow.
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