Across
- 1. an organism obtain or meets a need without being affected
- 3. too many of a certain species
- 5. interaction between organisms, strive for the same resources
- 8. long period of time with little or no rain
- 9. species introduced species that becomes overpopulated and harms its new environment
- 10. a group of animals, plants, or other living things share a common characteristic
Down
- 2. an environment where living and nonliving elements interact with each other
- 4. everything that surrounds and affects living things
- 6. a group of organisms of the same species
- 7. organisms that feed on grasses, low growing plants