Across
- 1. When the soil is frozen year-round, like in the tundra
- 4. Ecosystem with the most biodiversity
- 6. Cold, treeless subpolar regions
- 8. Living things in an ecosystem
- 10. Long-term change in a species to fit its environment
- 11. Water based ecosystems
- 12. Earth's primary energy source
- 13. Land based ecosystems
Down
- 2. A human-caused shipping accident that suffocates marine life
- 3. A group of individuals of the same species
- 4. capacity The maximum population size an environment can support
- 5. A place where two distinct biomes meet
- 7. A community of organisms interacting with their environment
- 9. The specific role an organism occupies in its environment
- 10. Nonliving factors in an ecosystem