A feeding level in an ecosystem.
The interconnected food chains in an ecosystem.
The region of the earth bisected by the equator and extending at low elevations to the Tropic of Cancer and south to the Tropic of Capricorn, characterized by moderate to warm temperatures year-round.
The plant life grown without cultivation in a given area within a stated period of time.
The part of the earth's surface lying between the tropic of Cancer and the Arctic Circle in the Norther Hemisphere or between the tropic of Capricorn and the Antarctic Circle in the Southern Hemisphere, characterized by having a climate that's warm in the summer, cold in the winter, and moderate in the spring and fall.
Any living individual whether plant or animal.
A biome of low-growing vegetation.
A depiction of the amount of energy in each trophic level of an ecosystem.
The sum of all chemical processes in living things.
The total wild animal life of an area in the broadest sens, like wild animals and birds, insects, etc.
The total of all atmospheric or meteorological influences, principally temperature, moisture, wind, pressure, and evaporation, which combine to characterize a region and give it individuality by influencing the nature of its landforms, soils, vegetation, and land use.
All the biotic and abiotic components of an environment.
A consumer that eats primary producers.
A region of mainly grass or other herbaceous vegetation; climate conditions are intermediate between those of forest regions and deserts.