The rapid rise in world population is not creating problems only for the developing countries. the whole world faces the problem that raw materials are being used up at an increasing rate and food production can not keep up with the population increase. people in rich countries make the heaviest demands on the world’s resources, its food, fuel and land, and cause the most pollution. a baby born in the united states will use in his lifetime 30 times more of the world’s resources than a baby born in india. unless all the countries of the world take united action to deal with the population explosion there will be more and more people fighting for a share of less and less land, food and fuel, and the future will bring poverty, misery and war to us all.
for most of the developing countries, it is a good idea to control the population growth. for example, china has carried out birth control for years. and this plan has a great effect on the world population.
if the population continues to increase, if the air and water continue to be polluted, if we don’t 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.
let’s 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.
重视首尾相互呼应，依托移步换形的描写方式展现事物变化串联全文，感悟自然不生硬说教，道理融入叙事，不会强行灌输观点，整体浑然一体。文章形成完整闭环结构，开头结尾相互照应。叙事脉络连贯统一，中心稳定，谋篇布局成熟，多处写作技巧值得学习。
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