我要英语9B第一单元课文要全别给我一半我主要后面三段谢谢

我要英语9B第一单元课文要全别给我一半我主要后面三段谢谢

THE YOUNG GREEN CONSUMER GUIDE
Review by Tony Ma
This book says that our world is in danger.It is vital that we do something to save the earth.First of all,what are the threats to our environment?
The Greenhouse Effect
The writers ask us to imagine the earth inside a kind of greenhouse with the atmosphere around it acting like the glass,letting sunlight in while keeping much of the warmth from getting out.The atmosphere is essential to all living things.Without it,the earth would be as cold and lifeless as the surface of the moon.The trouble is that our atmosphere is changing because we are polluting it with chemicals in the form of gases and it is keeping in too much heat!These gases,mainly carbon dioxide (CO2),are produced by burning fuels such as petrol.The Greenhouse Effect may cause the level of the sea to rise and drown cities and even whole countries.
Damage to the ozone layer
The writers tell us that ozone is a gas which occurs 20-50 km above the ground.It forms an essential protective layer around the earth.Without it,the sun would burn us up.We are making holes in the ozone layer mainly by using chemicals called CFCs.We use these in fridges and spray cans and to make plastic items such as fast food boxes.
Destruction of the rain forests
The burning and cut-ting down of trees is making the Greenhouse Effect worse,because trees take in CO2.It also causes erosion of the soil and flooding,as well as destroying the people and animals who make the forests their home.
Bad habits
Many of our habits cause pollution especially our habit of using things once and then throwing them away.This creates massive mountains of rubbish.We do not know what to do with the rubbish and it pollutes our land and sea.For example,seven billion drink cans are thrown away in Britain each year.That is enough to reach from the earth to the moon.
How can we save the earth?
The book's idea is that we should become green consumers.That is,we should only buy and use things that do not damage the environment.And we should buy only from companies that do not damage the environment either.
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