Across
- 2. You should keep your surroundings________.
- 3. The practice of keeping clean is called
- 5. We should _______ for our environment.
- 7. Do not ________.
Down
- 1. What we throw away is called _______.
- 4. We need to look after the__________.
- 6. The dirtying of the air land and water is called_______.