The earth,a blue globe,is very beautiful.It is the home to all the living things.But the environment around us is becoming worse and worse.People cut down trees to build houses and throw about litter.The air pollution is almost everywhere in the world!

As a student,we should plant as many trees as we can.And we shouldn’t drop litter here and there.Do you know what the low-carbon life style is like?It means saving more energy and producing less carbon.If we try our best to protect the earth,the world will become more and more beautiful.