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5 Written questions

5 Matching questions

  1. Carbon cycle
  2. Primary consumers
  3. Gross Primary Productivity (GPP)
  4. Nutrient (biogeochemical) cycles
  5. Chemosynthesis
  1. a Process in which certain organisms (mostly specialized bacteria) extract inorganic compounds from their environment and convert them into organic nutrient compounds without the presence of sunlight. Compare photosynthesis.
  2. b Organisms that are unable to produce their own energy. They must eat producers to obtain energy. Also called: consumers.
  3. c The elements and compounds that make up nutrients move continually through air, water, soil, rock and living organisms in ecosystems and in the biosphere
  4. d Cyclic movement of carbon in different chemical forms from the environment to organisms and then back to the environment.
  5. e The rate at which an ecosystem's producers capture and store a given amount of chemical energy as biomass in a given length of time. Compare net primary productivity.

5 Multiple choice questions

  1. The entire portion of Earth inhabited by life; the sum of all the planet's ecosystems.
  2. Organisms that eat living producers and/or other consumers for food
  3. Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
  4. Cyclic movement of sulfur in different chemical forms from the environment to organisms and then back to the environment.
  5. All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction.

5 True/False questions

  1. Trophic levelThe lowest layer of the atmosphere, in which temperature drops at a constant rate as altitude increases; the part of the atmosphere where weather conditions exist


  2. Natural greenhouse effectAnticipated increase in Earth's temperature, caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface.


  3. BioticPertaining to life; environmental factors created by living organisms


  4. HydrosphereA mixture of gases that surround the Earth


  5. EcologyThe study of how living things interact with each other and their environment