5 Written questions
5 Matching questions
- Carbon cycle
- Primary consumers
- Gross Primary Productivity (GPP)
- Nutrient (biogeochemical) cycles
- 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.
- b Organisms that are unable to produce their own energy. They must eat producers to obtain energy. Also called: consumers.
- 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
- d Cyclic movement of carbon in different chemical forms from the environment to organisms and then back to the environment.
- 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
- The entire portion of Earth inhabited by life; the sum of all the planet's ecosystems.
- Organisms that eat living producers and/or other consumers for food
- Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
- Cyclic movement of sulfur in different chemical forms from the environment to organisms and then back to the environment.
- 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
Trophic level → The 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
Natural greenhouse effect → Anticipated increase in Earth's temperature, caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface.
Biotic → Pertaining to life; environmental factors created by living organisms
Hydrosphere → A mixture of gases that surround the Earth
Ecology → The study of how living things interact with each other and their environment