Across
- 3. Different forms of the same gene
- 4. Nonliving environmental factors
- 7. Role or job of an organism in its environment
- 9. All living and nonliving things interacting in an area
- 14. Organism that breaks down dead matter
- 17. Position in a food chain or energy pyramid
- 21. Close relationship between different species
- 23. Random change in DNA
- 24. Movement of nitrogen through living and nonliving systems
- 25. Something that restricts population growth
- 26. Struggle between organisms for the same resources
- 27. Group of organisms of the same species in an area
- 28. density Number of individuals per unit area
- 30. Variety of life in an ecosystem
- 32. Model showing energy transfer between trophic levels
Down
- 1. Division of resources to reduce competition
- 2. Environmental factor that influences survival
- 5. Trait where elephants lack tusks
- 6. Having two different alleles
- 8. Species that has a disproportionately large impact on its ecosystem
- 10. Insects that break down wood and help recycle nutrients
- 11. capacity Maximum population an environment can support
- 12. Organism that makes its own food (usually via photosynthesis)
- 13. Organism that eats other organisms
- 15. Trait that improves survival and reproduction
- 16. Having two identical alleles
- 18. Living components of an ecosystem
- 19. Illegal hunting or killing of animals
- 20. Technique used to separate DNA by size
- 22. Network of interconnected food chains
- 29. Single pathway of energy flow
- 31. Segment of DNA that codes for a trait