第1个
开头：caring for nature--overpopulation what is nature? its everything that exists in the world independently of people, such as pants and animals, earth and rocks, and the weather.
结尾：what is threatening the nature? air and water pollution, overharvesting of plant and animal species, 《中学生英语演讲稿——关爱大自然》
第2个
开头：caring for nature--overpopulation what is nature overpopulation and so on. overpopulation is the biggest source of pollution. lets take overpopulation as an example. what does overpopulation feel like
结尾：;do something to protect wild-plant and wildlife species will be declining. species and biological communities have difficulty adapting to change. economic opportunities and the quality of life of future generations are also put at risk. by protecting nature, we protect ourselves. lets unite together, hand in hand we stand all across the land. we can make this world in which to live. hand in hand. control the population growth. take good care of our nature.
第3个
开头：what is nature? its everything that exists in the world independently of people, such as pants and animals, earth and rocks, and the weather. now more and more people are focusing on the nature. it is no doubt that the nature is important to every human being. no nature, no life. because of the supplies of the nature, we have lived happily for a long time. and we started to gain every thing available from the nature. and this lasted so long a time. today, people have discovered that the nature around is getting worse and worse.
结尾：if the population continues to increase, if the air and water continue to be polluted, if we dont do something to protect wild-plant and wildlife species will be declining. species and biological communities have difficulty adapting to change. economic opportunities and the quality of life of future generations are also put at risk. by protecting nature, we protect ourselves. lets unite together, hand in hand we stand all across the land. we can make this world in which to live. hand in hand. control the population growth. take good care of our nature.
