Unit 14 - Matter & Energy in Ecosystems

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Across
  1. 4. A diagram that shows the dry mass of biological material at each trophic level of an ecosystem. It is called a pyramid of ________.
  2. 7. An organism that obtains matter and energy by breaking down the organic matter in wastes and dead organisms. They recycle carbon, nitrogen, and other elements in organic matter by using them to make nutrients that producers need.
  3. 8. The total dry mass of the biological material, including organisms and decaying organic matter, in a given part of an ecosystem.
  4. 10. Anything that has weight and takes up space.
  5. 12. A diagram that shows the amount of individuals at each trophic level of an ecosystem. It is called a pyramid of ________.
  6. 14. A diagram that shows the feeding relationships among many species in an ecosystem.
  7. 16. A group of individuals of the same species living together in the same area at the same time.
  8. 17. A consumer that obtains matter and energy by eating pieces of dead organisms and organic wastes. Example: Earthworm
Down
  1. 1. An organism that makes its own food and provides food for other organisms in a food chain or food web. It is always the first organism in a food chain and is also called a producer.
  2. 2. A diagram that shows the feeding relationships that link together one series of species in an ecosystem.
  3. 3. on its main source of food.
  4. 5. A system formed by the interaction of living organisms with the nonliving physical environment.
  5. 6. A form of energy related to the random motion of atoms and molecules. It is not useful to anything that produces it because it flows out of a warmer object into its cooler surroundings and dissipates.
  6. 9. An organism that obtains matter and energy by eating other organisms or parts of organisms. It is also called a consumer.
  7. 11. A diagram that shows the amount of energy (in kilocalories) at each trophic level of an ecosystem. It is called a pyramid of ________.
  8. 13. To try to obtain resources (such as food, water, and space) that others are also trying to get.
  9. 15. A consumer that obtains matter and energy by eating the remains of dead organisms. Example: vulture.
  10. 18. The level of a species in an ecosystem