Across
- 4. a substance that an organism needs to grow and maintain its body
- 5. _____ element; these are the living factors in an ecosystem
- 6. you need a microscope to help you see this living thing
- 8. a species that lives in one given area
- 9. study of relationships between organisms and their environment
- 10. interactions between abiotic and biotic elements that make up an environment
Down
- 1. _____ element; these are the nonliving factors in an ecosystem
- 2. the environment where an organism lives
- 3. a group of populations of different species in an area
- 7. similar living things that can reproduce
- 11. a living thing