Across
- 3. a large flat area of land with grass a very few trees
- 4. a type of animal that feeds milk to its young
- 7. everything that exists in an environment
- 8. the act or result of cutting down or burning forests
- 10. area of land covered with shallow water
- 11. process of turning water and CO2 into food
Down
- 1. a plant or aniimal that has become rare and may die out
- 2. the whole mass of air that surrounds the earth
- 5. a place that a plant or animal normally lives in
- 6. the gradual destruction of something by natural forces
- 9. plant like life forms that have no flowers