Unit #3 Vocabulary List - Ecology

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Across

  1. Organsisms that obtain energy by eating only plants.
  2. When the feeding relationships among various organisms in an ecosystem form a network of complex interaction, this is called a __________.
  3. The total amount of living tissue within a given trophic level is called __________.
  4. Another word for autotrophs.
  5. The scientific study of interactions among organisms & their environment.
  6. Another word for heterotrophs.
  7. When organisms use chemical energy to produce carbohydrates, the process is called __________.
  8. Contains the combined portions of the planet in which life exits, including land, water, & air.
  9. Groups of individuals that belong to the same species and live in the same area.
  10. Onle plants, some algae, and certain bacteria can capture energy from sunlight or chemicals and use that energy to produce food. The organisms are know as __________.
  11. Organisms that obtain energy by eating plant and animal remains and other dead matter.
  12. Organisms that obtain energy by eating only animals.
  13. Organisms that obtain energy by eating both animals and plants

Down

  1. Autotrpohs harness solar energy through a process called __________.
  2. A collection of organisms that live in a particular place, together with their nonliving environment.
  3. Organisms thats rely on other organisms for their energy and food supply are called __________.
  4. A group of ecosystems that have the same climate and similiar dominant communities.
  5. Each step in a food web or food chain is called a __________.
  6. The amount of energy of matter in a ecosystem can be represented by a(n) __________.
  7. Different populations that live together in a defined area.
  8. A group of organisms so similiar to one another that they can breed and produce fertile offspring.
  9. A series of steps in which organisms transfer energy by eating and being eaten.
  10. Organisms, such as bacteria and fungi, break down organic matter.


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