Across
- 3. About 70 percent of the Earth's surface is covered with ______.
- 7. waste obtained from plants and animals is _____.
- 8. The princile of 3R's stands for reducing waste, reusing and ________ resources.
- 9. Things like air,water and soil together forms an ______.
- 10. The natural home or environment of an animal, plant, or other organism.
Down
- 1. Solar is a ______ source of energy.
- 2. Turning OFF lights helps us to conserve ________.
- 4. The surroundings and the conditions in which we live, constitute our ______.
- 5. We shoould avoid using _______ bags, because they are non-biodegradable.
- 6. Smoke from vehicles and factories makes air _____.