Across
- 1. A system of interconnecting food chains
- 4. An organism that feeds on living materials
- 5. A tribe of Indians who roamed from coast to desert
- 6. A personal or social moral code
- 8. Those plants and animals that are in danger of becoming extinct
- 11. Most active during the day
- 12. The passage of chemical energy to producers from consumers
- 13. A group of living things which are generally found together within an ecosystem
- 14. An arrangement of food, water, shelter, and space suitable to an organisms needs
- 16. Series of continuous changes which return to a starting point
- 17. The wearing away of earth or rock by various agents or forces, particularly water and air
Down
- 1. A break in the Earth's crust where one side moves against the other, resulting in an earthquake
- 2. Everything that surrounds an organism, including living and non-living matter
- 3. Those animals without a backbone, including annelids, arachnids, crustaceans, insects, and mollusks
- 7. Readily decomposing by natural biological processes
- 9. A characteristic (physical or behavioral) that improves an organism's chance for survival in a particular habitat
- 10. An organism that breaks down or decomposes materials into simpler forms (ie: bacteria, some invertebrates, fungi)
- 13. Capacity The total number of animals a given area is able to support
- 15. The ability to do work