Biology

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Across
  1. 3. Study of past and present distribution of organism's.
  2. 5. Assemblage of different populations that live together in a defined area.
  3. 6. Each step in a food chain or food web.
  4. 7. Structor that is inherited from ancestors but which has lost much or all of its original function.
  5. 9. The ability of organisms— or, more rarely, populations or species— to survive and reproduce in the environment in which they find themselves.
  6. 10. Largest number of individuals of a particular species that a particular environment can support.
  7. 13. The geologically altered remains of a once-living organism and/or its behaviour.
  8. 19. Adjustment to living in accordance with interpersonal, social, and cultural norms.
  9. 20. All the organism's that live in a place, together with their nonliving environment.
  10. 21. A process that results in changes in the genetic material of a population over time.
  11. 23. Network of complex interactions formed by the various organism's in an ecosystem.
  12. 25. A pattern of behavior in which animals travel from one habitat to another in search of food, better conditions, or reproductive needs.
  13. 26. An interaction between organisms or species in which both require a resource that is in limited supply.
  14. 27. Groups of individuals of the same species that live in the same area.
  15. 28. Factor that causes population growth to decrease.
Down
  1. 1. Process by which organism's that are most suited to their environment survive and reproduce most successfully.
  2. 2. Structures that are similar in different species of common ancestors.
  3. 3. A graphical representation of the energy found within the trophic levels of an ecosystem.
  4. 4. Part of Earth in which life exists, including land, water, and air or atmosphere.
  5. 8. Non-native species whose introduction causes, or is likely to cause, economic harm, environmental harm, or harm to human health.
  6. 11. Body parts that share a common function, but not an evolutionary history.
  7. 12. Group of similar organism's that can breed and produce fertile offspring.
  8. 14. Any kind of green plant.
  9. 15. A defense mechanism or tactic that organisms use to disguise their appearance, usually to blend in with their surroundings.
  10. 16. Group of ecosystems that share similar climates and typical organism's.
  11. 17. A relationship between organisms that strive for the same resources in the same place.
  12. 18. The similarity of one organism (the mimic) to another (the model) that enhances the mimic's fitness through its effect on the behavior of a third party, the operator.
  13. 21. The study of the development of the anatomy of an organism to its adult form, provides evidence for evolution as embryo formation in widely-divergent groups of organisms tends to be conserved.
  14. 22. The movement of genes into or out of a population. Geneticdrift
  15. 24. Series of steps in an ecosystem in which organism's transfer energy by eating and being eaten.