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Ecosystems
Term | Definition |
---|---|
Organism | a living thing |
Habitat | an environment that provides the things a specific organism needs to live, grow, and reproduce |
Biotic factor | a living or once living part of an organism’s habitat |
Abiotic factor | a nonliving part of an organism’s habitat |
Population | all the members of one species living in the same area |
Community | all the different populations that live in a certain area |
Ecosystem | the community of organisms that live in a particular area, along with their nonliving environment |
Limiting factor | an environmental factor that causes a population to decrease in size |
Resources | supply of materials |
Density | the degree of compactness of a substance |
Producer | an organism that can make its own food |
Consumer | an organism that obtains energy by feeding on other organisms |
Decomposer | an organism that gets energy by breaking down biotic wastes and dead organisms and then returns raw materials to soil and water |
Food chain | a series of events in an ecosystem in which organisms transfer energy by eating and by being eaten |
Food webs | the pattern of overlapping feeding relationships or food chains among the various organisms in an ecosystem |
Energy pyramid | a diagram that shows the amount of energy that moves from one feeding level to another in a food web ecosystem |
Role | the function assumed or part played by a person or thing in a particular situation |
Law of conservation of mass | is that, in a closed or isolated system, matter cannot be created or destroyed |
Law of conservation of energy | states that energy can neither be created nor destroyed - only converted from one form of energy to another |
Evaporation | the process by which molecules at eh surface of a liquid absorb enough energy to change to a gas |
Condensation | the change in the state of matter from a gas to a liquid |
Precipitation | any form of water that falls from the clouds and reaches Earth’s surface as rain, sleet, snow, or hail |
System | a set of things working together |
Components | a part or element of a larger whole |