Across
- 1. 2nd April
- 4. A biological community of interacting organisms and their physical environment.
- 7. One of the aim of Green Society is to spread awareness of protecting the ____________.
- 8. The natural home or environment of an animal, plant or other organism
- 10. Gradual warming of earth's surface temperature caused by the emission of gases that trap the sun's heat in the earth atmosphere.
- 11. Odourless gas that is present in the earth and necessary to maintain life
- 12. The feeding relationships between species within an ecosystem.
Down
- 2. to threat things that have already been used so they can be used again
- 3. Conversion of forested areas to non-forest land for agriculture, urban use, development, or wasteland.
- 5. Prevention of wasteful use of a resource.
- 6. sun energy
- 9. Contamination of the earth