5 Written questions
5 Matching questions
- Hydrologic (water) cycles
- Sulfur cycle
- a An animal or plant with organs that function together to maintain life; a living thing; anything that resembles a living thing in structure or function
- b Cyclic movement of sulfur in different chemical forms from the environment to organisms and then back to the environment.
- c The earth's liquid water (oceans, lakes, other bodies of surface water, and underground water), frozen water (polar ice caps, floating ice caps, and ice in soil, known as permafrost), and water vapor in the atmosphere. See also hydrologic cycle.
- d Organisms that break down the dead remains of other organisms.
- e Continuous movement of water on, above and below the surface of the Earth.
5 Multiple choice questions
- A measure of the total dry mass of organisms within a particular region
- Organisms that produce their own food
- The elements and compounds that make up nutrients move continually through air, water, soil, rock and living organisms in ecosystems and in the biosphere
- A catabolic process that makes a limited amount of ATP from glucose without an electron transport chain and that produces a characteristic end product, such as ethyl alcohol or lactic acid.
- Anticipated increase in Earth's temperature, caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface.
5 True/False questions
Food chain → Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
Biogeochemical cycles → The pathways by which chemicals circulate through ecosystems that involve both living (biotic) and nonliving (geological) components.
Troposphere → The layer of Earth's atmosphere that extends from the troposhere to the mesosphere; concentrations of ozone cause it to get warmer as you go up in this layer.
Tertiary consumers → Animals that feed on animal-eating animals. They feed at high trophic levels in food chains and webs. Examples are hawks, lions, bass, and sharks. Compare detritivore, primary consumer, secondary consumer.
Ecosystems → Organisms that eat living producers and/or other consumers for food