Across
- 3. Colorless gas that is a form of oxygen.
- 4. A yellow and black flying insect.
- 6. Mixture of smoke, gases, and chemicals, especially in cities.
- 7. Material made chemically and shaped into different forms for different uses.
- 9. Mixture of gases that surrounds our planet.
- 11. Gradual increase in the earth’s temperature, caused by gases.
Down
- 1. Companies involved in the production of goods for sale.
- 2. Cutting down trees in a large area.
- 5. Trashing out planet(Othellu world).
- 8. Relationship of living things to their environment and to each other.
- 10. Waste material or unwanted things that you throw away.