Protect the earth

Now,people’s lfe is worse than before,and we forgot to protect the earth,so the air is terrible now.Factories and cars make smoke into the air and people keep cutting dow the tress.If we didn’t stop this,the air will be more worse than today.
We can plant more trees .When we go to school,we can walk or ride the bike……If allof us can do this,I bleive the air well be more clear.there will be less pullution and people will be healther than now.