口语课演讲稿(热门十篇)
hi， my topic is about environmental protection.
today the quality of our natural environment has become an important issue. the world population is rising so quickly that the world has become too crowded.
we are using up our natural resources and at the same time polluting our environment with dangerous chemicals. if we continue to do this, life on earth cannot survive.
pollution has been a serious problem for a certain time around the world. there are many causes for it. transportation is the main factor of pollution. when the waste gas from cars is released, the air is polluted. people breathing in the polluted air can develop respiratory disease. another factor is that
people throw their garbage everywhere. all kinds of garbage not only spoil the splendid environment, but also cause environmental pollution. wastewater from factories is also poured into rivers and this causes water pollution
concerned people have made some progress in environmental protection. governments of many countries have established laws to protect the air, forests and sea resources and to stop environmental pollution.
still more measures should be taken to solve environmental problems. people should b...
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