Across
- 2. the total mass of organisms in a given area or volume
- 5. the process of rotting and decay
- 8. the role an animal takes on in an environment
- 9. the branch of science concerned with environmental relations
- 10. the process of being worn out to exposure to the environment
- 12. the supply of water to land or crops to aid in growth
- 13. the region of the Earth that contain life
- 15. an organism that obtains energy by eating other organisms
Down
- 1. nonliving (the prefix bio- means living)
- 3. a collection of plants and animals
- 4. relating to the surroundings of something
- 6. the process of transforming into an uninhabitable land
- 7. the plants of the particular region
- 11. land suited for growing crops
- 14. a community of interacting organisms