Biology crossword puzzle

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Across
  1. 7. Community A stable mature community that undergoes little or no change in species over time
  2. 9. Any animal that feeds chiefly on grass and other plants
  3. 11. specie A species whose impact on its community or ecosystem are much larger and more influential than would be expected from mere abundance
  4. 14. the relation between two different kinds of organisms when one receives benefits from the other without damaging it
  5. 15. Process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
  6. 16. A group of the same type of organisms living in the same place at the same time
  7. 19. The type of environment in which an organism or group normally lives or occurs
  8. 22. Any animal that feeds on flesh
  9. 23. Respiration The metabolic processes whereby certain organisms obtain energy from organic molecules
  10. 24. A living thing that has (or can develop) the ability to act or function independently
  11. 25. the struggle between organisms to survive in a habitat with limited resources
  12. 26. A system formed by the interaction of a community of organisms with their physical environment
Down
  1. 1. The role of an organism within its environment and community (affecting its survival as a species)
  2. 2. An organism that feeds on plant and animal remains and other dead matter
  3. 3. repeating subunit of chromatin fibers, consisting of DNA coiled around histones
  4. 4. The branch of biology concerned with the relations between organisms and their environment
  5. 5. Species Species that serve as early warnings that a community or ecosystem is being degraded.
  6. 6. The diversity of plant and animal life in a particular habitat (or in the world as a whole)
  7. 8. Symbiotic relationship in which both species benefit from the relationship
  8. 10. A group of interdependent organisms inhabiting the same region and interacting with each other
  9. 12. replication method of DNA replication in which parental strands separate, act as templates, and produce molecules of DNA with one parental DNA strand and one new DNA strand
  10. 13. Species Plants and animals that have migrated to places where they are not native
  11. 15. community First integrated set of plants, animals, and decomposers found in an area undergoing primary ecological succession.
  12. 17. Species Species that migrate into an ecosystem or are deliberately or accidentally introduced into an ecosystem by humans.
  13. 18. Species Plants and animals that naturally inhabit an area
  14. 20. The total mass of living matter in a given unit area
  15. 21. Organism that breaks down and obtains energy from dead organic matter