We all have a common home.
She provides us with enough food, enough water and enough living room.
We get everything from nature to live better,
but we don't do anything to protect her.
Now the air is polluted,the earth is poisoned,
water is unsafe to drink and rubbish is burying the civili- zation that man owns
Our environment is being polluted
faster than nature and man's efforts can prevent.
Time is bringing us more people,and more people will bring us more industry.
So many trees will be cut down,and more large cities will be set up.
Lots of waste material,in turn,is produced and harms the environment.
So some experts declare that the balance of nature is being upset,
so that the very survival of man is in danger.
What can solve this growing problem?
The answer is that we must control population growth,
forbid people to cut down trees and pour waste water into rivers and so on.
If we do this,the environment will become clean,
and our lives will be full of happiness