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ecosystem consists of a group of living organisms that interact with one another and the nonliving physical environment as one unit
environment The total of the surrounding influencing each living being's existence, including physical, biological and all other factors; the surrounding of plants or animals, including other plants or animals, climate and location.
homeostasis The tendency for a system by resisting change to remain in a state of equilibrium.
abiotic nonliving physical and chemical parts of an ecosystem with which living organisms interact
biotic An environmental factor related to or produced by living organisms.
biomes interaction of living organisms with other living organisms
niche The role played by an organism in an ecosystem; its food preferences, requirements for shelter, special behaviors and the timing of its activities
consumer Those organisms that obtain energy by feeding on other organisms and the remains. a person buying goods or services for personal needs or to use in the production of other goods for resale.
decomposer An organism, often microscopic in size, that obtains nutrients by consuming organic matter, thereby making nutrients accessible to other organisms
shredder Through chewing and/or grinding, microorganisms feed on non-woody coarse particulate matter, primarily leaves
dichotomous in which the axis is divided into two branches.
pest A label applied to an organism when it is in competition with humans for some resource.
integrated pest management A variety of pest control methods that include repairs, traps, bait, poison, etc. to eliminate pests.
acid deposition Precipitation with a pH less than 5.6 that forms in the atmosphere when certain pollutants mix with water vapor.
stream order Energy and nutrient flow that increases as water moves toward the oceans (e.g., the smallest stream (primary) that ends when rivers flow into oceans).
topographic map physical characteristics of the land
watershed The land area from which surface runoff drains into a stream, channel, lake, reservoir or other body of water; also called a drainage basin
wetlands Lands where water saturation is the dominant factor determining the nature of the soil development and the plant and animal communities
hydrology the branch of science concerned with the properties of the earth's water, especially its movement in relation to land.
groundwater water stored beneath the Earth’s surface in rock
mitigation The policy of constructing or creating man-made habitats, such as wetlands, to replace those lost to development.
lentic Relating to or living in still water
lotic Relating to or living in actively moving water.
Created by: 22reed.jad