1. I ride a bike when we come to school

2. We must to turn off the lights when we leave from our classroom.

3. He is burning the remains of corn in the field.

4. We use a lot of water as more as possible.

5. Students plant trees

6. use one side of paper again

7. Not Reduce, Reuse, Recycle

8. Give Up Plastics.

9. Give Composting a Try

10. ฺBurn waste