Saving paper is really environmentally friendly.

Big trees and small trees are not reduced!

Who is environmentally friendly? You are environmentally friendly,

Turning off the lights is environmentally friendly.

The pollution of the earth is decreasing!

Who is environmentally friendly? He is friendly to the environment,

Tightening the faucet is really environmentally friendly.

Saving water is very important!

We are all environmentalists,

The earth becomes better!