4.2 Energy Flow

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Across
  1. 1. the total mass of living matter within a given unit of environmental area, expressed in terms of living or dry weight per unit area.
  2. 4. an organism that obtains carbon by feeding on the organic material present in other organisms, living or dead.
  3. 6. a feeding hierarchy in which organisms in an ecosystem are grouped into trophic (nutritional) levels and are shown in a succession to represent the flow of food energy and the feeding relationships between them.
  4. 8. a series of metabolic processes that take place within a cell in which biochemical energy is produced from organic substances and stored as energy carriers (ATP) for use in the energy-requiring activities of the cell.
  5. 9. a graphical model to show how the energy flows through a food chain, how the amount of energy is decreasing and becoming less available for organisms as it enters each trophic level, and how much of the energy in the ecosystem is lost to the atmosphere as heat.
  6. 10. the movement of energy around an ecosystem by biotic and abiotic means.
  7. 13. the name given to an organism that feeds on the producer in a food chain. For example, a goat is considered a first order consumer since it eats green plants.
  8. 14. the process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source.
  9. 15. a system that includes all biotic factors (living organisms) in an area as well as its abiotic factors (physical environment) functioning together as a unit.
Down
  1. 2. an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
  2. 3. the position in a food chain occupied by a group of organisms with similar feeding modes.
  3. 5. energy released from a substance, or absorbed in the formation of a chemical compound, during a chemical reaction.
  4. 7. an organism that feeds on primary consumers.
  5. 11. the energy produced or given off directly from the sun causing the growth of plants and the existence of most life forms.
  6. 12. an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.