5 Written questions
5 Matching questions
- Trophic level
- Phosphorus cycle
- a Organisms that use energy from sunlight or inorganic substances to make organic compounds
- b Organisms that rely on other organisms for their energy and food supply
- c All organisms that are the same number of energy transfers away from the original source of energy (for example, sunlight) that enters an ecosystem. For example, all producers belong to the first trophic level, and all herbivores belong to the second trophic level in a food chain or a food web.
- d Cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back to the environment
- e 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
5 Multiple choice questions
- 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.
- 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.
- The pathways by which chemicals circulate through ecosystems that involve both living (biotic) and nonliving (geological) components.
- A measure of the total dry mass of organisms within a particular region
- Nonliving; specifically, the nonliving components of an ecosystem, such as temperature, humidity, the mineral content of the soil, etc.
5 True/False questions
Atmosphere → The entire portion of Earth inhabited by life; the sum of all the planet's ecosystems.
Secondary 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.
Sulfur cycle → Cyclic movement of sulfur in different chemical forms from the environment to organisms and then back to the environment.
Gross Primary Productivity (GPP) → 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.
Decomposers → Organisms that eat living producers and/or other consumers for food