1. The sky is blue, the grass is green, and the heart is pure.

2. Flowers need green leaves to support them, and schools need classmates to protect them!

3. Protecting the environment starts with me.

4. "Hold hands" to be green and environmentally friendly and stay away from "white pollution".

5. Save a drop of water and the earth will be more beautiful.

6. Protecting the ecological environment means caring for yourself.

7. Build a green campus together and enjoy the singing of birds and the fragrance of flowers.

8. To maintain the ecological balance of the earth is to protect the people themselves.

9. Mother Earth is crying because of human beings’ mischief. Please stop her tears.

10. Please take care of every tree, otherwise we will see flooding and barren deserts.

11. Protect the environment and be beneficial to health.