Natalie Santiago Ecology Part One: Crossword puzzle

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Across
  1. 3. when energy is passed in an ecosystem from one trophic level to the next, only ten percent of the energy will be passed on
  2. 4. the rivalry between or among living things for territory, resources, goods, mates, etc
  3. 7. graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem
  4. 10. the total mass of organisms in a given area or volume
  5. 11. number of people, other living organisms, or crops that a region can support without environmental degradation
  6. 14. position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans
  7. 15. anything that constrains a population's size and slows or stops it from growing
  8. 17. the range of different inherited traits within a species
  9. 18. the variety of life in the world or in a particular habitat or ecosystem
  10. 20. non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems
Down
  1. 1. an animal that naturally preys on others
  2. 2. sustainable habitat of interdependent animals, plants, and microorganisms and their environment
  3. 5. describes the changes in energy (a state function) that occur between organisms within an ecosystem
  4. 6. introduced organism that becomes overpopulated and harms its new environment
  5. 8. organisms that make their own food
  6. 9. the natural home or environment of an animal, plant, or other organism
  7. 12. organisms that need to eat (i.e. consume) food to obtain their energy
  8. 13. a living organism that shapes its environment
  9. 16. natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community
  10. 19. an animal that is hunted and killed by another for food