Dear headmasters,teachers,classmates and friends:
We live in the world every day. We eat food, drink water, wear clothes,watch TV, use computers and so on. We are producing waste every moment.
Generally speaking, there are four sorts of waste. They are material waste,organic waste, inorganic waste and poisonous & harmful waste. Now, we aregoing to talk about each sort of waste one by one.
Material waste: it means the waste of substance or things from whichsomething else can be made. For example, people throw away the used metalproducts and buy a new one, so the old metal waste accumulates. At last, theybecome waste. For example, when people finish reading newspaper, the paper willbecome waste. When the glass is broken, it also becomes waste. Nobody wants touse a broken window or drink with a broken glass or wear a pair of brokenglasses. Once it is broken, it becomes waste. The rate of using plastics isincreasing day by day. People use plastic bags because they are convenient. Whenthey get home, they throw the plastics way, paying no attention to theenvironment. The more convenience plastics brings to us, the more plastic wasteis produced. This is called “white pollution” as most plastics are white. Someof our products we use every day are made of rubber, just like the tyres and thebottom part of our shoes. It’s true that rubber plays an important role in ourlife. However, it also brings us some trouble when it has been used for a longtime and becomes old. The old tyres become waste because it can’t break down bynature. This is really a big problem.
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