Across
- 4. Tribe of Indians who roamed from coast to desert
- 7. Those plants and animals that are in danger of becoming extinct
- 10. Everything that surrounds an organism, including living (biotic) and non-living (abiotic) matter.
- 12. those animals without a backbone, including annelids, arachnids, crustaceans, insects, and mollusks.
- 14. Readily decomposing by natural biological processes.
- 16. A characteristic (physical or behavioral) that improves an organism’s chance for survival in a particular habitat.
- 17. the wearing away of earth or rock by various agents or forces, particularly water and air
- 18. a personal or social code
- 19. Series of continuous changes which return to a starting point.
Down
- 1. the ability to do work
- 2. an organism that feeds on living materials. A consumer cannot make its own food
- 3. Most active during the day
- 5. a break in the earth’s crust where one side moves against the other, resulting in an earthquake
- 6. the arrangement of food, water, shelter, and space available to an organism’s needs
- 8. an organism that breaks down or decomposes materials into simpler forms (i.e., bacteria, some invertebrates, fungi)
- 9. The total number of animals a given area is able to support.
- 11. a system of interconnecting food chains
- 13. A group of living things which are generally found together within an ecosystem
- 15. the passage of chemical energy (food) from producers to consumers