ECOLOGY: Definition of Terms

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Across
  1. 2. - heterotrophic bacteria and fungi that obtain organic nutrients by breaking down the remains of products of organisms.
  2. 5. - the total dry mass of all living organisms at a given tropic level of an ecosystem.
  3. 8. of Terms
  4. 9. level - all organisms that are the same number of energy transfer away from the original source of (e.g. sun light) that enters an ecosystem.
  5. 10. - a process by which a body of water becomes over enriched with nutrients, and as a result produces an over-abundance of plants.
  6. 11. factors all environmental conditions required to support life
  7. 14. - community and its physical and chemical environment.
  8. 15. web - networks of many interlocked fiid chaunbs, encompassing proudcets, consumers, decomposers, and detritivores.
Down
  1. 1. -  reduction of nitrate or nitrite to gaseous nitrogen(N2) and a small amount of nitrous oxide (NO2) by soil bacteria.
  2. 3. cycle - the cycling of materials through living system and back to the earth
  3. 4. - decomposition of nitrogenous wastes and remains of organisms by certain bacteria and fungi.
  4. 6. - organisms that ingest other organisms to obtain organic nutrients.
  5. 7. factors - living organisms in an ecosystem.
  6. 10. is the study of the relationships between living organisms, including humans, and their physical environment.
  7. 12. - the population of all species that occupy a habitat.
  8. 13. chain-linear sequence of who eats whom in an ecosystem.