文档介绍：Chapter3 Environment
Words
&
Expressions
atmosphere
the surface of the moon
rainforest
destruction of
rainforest
flood
What’s happening to the ozone layer?
What will the result be?
How much do you know about trees?
Trees are the best fighters against
pollution. Because they can not only
take in harmful gases but also keep air
clean. What’s more, trees can prevent
soil from being washed away.