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Ecosystems
Interactions of Living Things
| Question | Answer |
|---|---|
| ecosystem | A community of organisms and its abiotic environment. |
| biotic | The part of the environment that includes all of the organisms that live together and interact with one another. |
| decomposer | An organism that gets its energy by breaking down dead organisms. |
| community | All of the populations of different species that live and interact in an area. |
| ecology | The study of the interactions between organisms and their environment. |
| scavenger | Animals that feed on the bodies of dead animals. |
| consumer | An organism that eats producers or other organisms to get energy. |
| population | A group of individuals of the same species that live together in the same area at |
| omnivore | A consumer that eats both plants and animals. |
| producer | An organism that uses sunlight to make food. Sunlight is their source of energy. |
| organism | An individual living thing. |
| prey | The organism that is eaten by a predator. |
| carnivore | A consumer that eats animals. |
| biosphere | The part of the Earth where life exists. |
| abiotic | The part of the environment that includes all of the nonliving factors that affect organisms. This includes water, soil, light, and temperature. |
| predator | The organism that eats the prey. |
| herbivore | A consumer that eats only plants. |
| symbosis | A close long-term relationship between 2 or more organisms. |
| commensalism | A symbiotic relationship where one organism benefits and the other is unaffected. |
| mutualism | A symbiotic relationship where both organisms benefit. |
| parasitism | A symbiotic relationship where one organism benefits while the other is harmed. |
| parasite | Organism that benefits in a parasitic relationship. |
| host | Organism that is harmed in a parasitic relationship. |
| niche | An organism's way of life within an ecosystem. Its food, habitat, predators, prey, competition, family structure. |
| habitat | The environment in which an organism lives. |
| carrying capacity | The largest population that a given environment can support over a long period of time. |
| competition | When two organisms try to use the same limited resource. |
| energy pyramid | A way to represent the loss of energy at each level of the food chain. |
| food web | A diagram showing the many pathways between organisms. |
| food chain | A linear diagram that shows how energy flows from one organism to the next. |
| coevolution | the long-term changes that take place in two species because of their close interactions with one another |