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Ecosystem
| Term | Definition |
|---|---|
| ecosystem | all the living and nonliving things in an area that interact with each other |
| autotroph | any organism that can create its own food from inorganic materials |
| heterotroph | an organism that cannot create its own energy and must instead rely on consuming nutrients from other organisms |
| producers | an organism that makes its own food; an organism that does not consume other plants or animals |
| primary consumers | (in the food chain) an animal that feeds on plants |
| secondary consumers | (in the food chain) a carnivore that feeds only upon herbivores. |
| decomposers | organisms which carry out the process of decomposition by breaking down dead or decaying organisms |
| herbivores | an animal that consumes only plants |
| carnivores | an animal that eats only other animals |
| omnivores | an animal that eats plants as well as other animals |
| population | the group of organisms of the same species living in the same area |
| community | a group of different populations that live together and interact in an environment |
| density | an object's mass divided by its volume; a measure of how many particles are packed together into a certain amount of space |
| limiting factor | an environmental factor that tends to limit population size. |
| food chain | a model that shows one set of feeding relationships among living things |
| food web | a model that shows many different feeding relationships among living things |
| predator | an animal that hunts and eats another animal |
| prey | an animal that is hunted and eaten by another animal |
| organism | any individual living thing |
| succession | a number of persons or things following one another in order or sequence. |
| energy pyramid | a model that shows the available amount of energy in each trophic layer in an ecosystem |
| competition | the rivalry offered by a competitor |
| mutualism | a relationship between two species of a plant, animal, or fungus in which one lives off the other and both organisms benefit |
| symbiosis | the living together of two dissimilar organisms, as in mutualism, commensalism, or parasitism. |
| coexistence | to exist together or at the same time. |
| cooperation | an act or instance of working or acting together for a common purpose or benefit; joint action. |
| primary succession | The ecological succession of plant and animal communities in a disturbed area where no topsoil exists, as on a new lava flow. |
| secondary succession | The ecological succession of plant and animal communities in a disturbed area where topsoil has been retained, as in an area that has been recently burned by fire. |
| Terrestrial | relating to the earth or those who live there. |
| taiga | a large naturally occurring area of land with largely evergreen forest vegetation found in northern sections of the Northern Hemisphere |
| tundra | extremely cold climate located near the North and South Poles and on the tops of mountains; receives very little precipitation and has no trees |
| deciduous forest | a forest containing trees that lose their leaves each year |
| grasslands | an area of land covered mostly with grass with few bushes or trees |
| tropical rain forests | A forest with high rate of precipitation and high humidity, usually located near the equator. |
| deserts | an area that gets little precipitation and has very little vegetation |
| aquatic | relating to water |
Created by:
rany22m
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