Across
- 2. When predator numbers go up, prey go ___.
- 5. The sad member of a parasitic relationship.
- 8. When prey numbers go up, predator numbers go ___.
- 9. Bigger than an ecosystem
- 11. A good way to estimate the size of a population of turtles.
- 12. A close relationship between two organisms in which at least one of them benefits.
- 13. All of the populations in an area.
Down
- 1. All of the members of the same species in an area.
- 3. The driest biome
- 4. Not a living thing
- 6. Count a few in a small area and then multiply
- 7. A living thing
- 10. Examples are the forest, meadow or pond.
- 14. The coldest biome