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Ecology
| Term | Definition |
|---|---|
| ecosystem | all the living and nonliving things that interact in an area |
| habitat | the place where an organism lives and that provides the things the organism needs |
| biotic factor | a living part of an ecosystem |
| abiotic factor | a nonliving part of an ecosystem |
| population | all the members of one species in a particular area |
| community | all the different populations that live together in an area |
| ecology | the study of how living things interact with each other and their environment |
| population density | the number of individuals in a specific area |
| immigration | moving into a population |
| estimate | an approximation of a number based on reasonable assumptions |
| emigration | leaving a population |
| birth rate | the number of births in a population in a certain amount of time |
| limiting factor | an environmental factor that prevents a population from increasing |
| death rate | the number of deaths in a certain amount of time |
| carrying capacity | the largest population that an area can support |
| niche | an organism's particular role in an ecosystem, or how it makes its living |
| competition | the struggle between organisms for the limited resources in a habitat |
| predation | an interaction in which one organism hunts and kills another animal for food |
| predator | a carnivore that hunts and kills other animals for food and has adaptations that help it capture the animals it preys upon |
| prey | an animal that a predator feeds upon |
| symbiosis | a close relationship between 2 organisms in which at least one of the organisms benefits |
| mutualism | a type of symbiosis in which both partners benefit from living together |
| commensalism | a relationship between 2 species in which one species benefits and the other is neither helped nor harmed |
| parasitism | a relationship in which one organism lives on or inside another and harms it |
| parasite | an organism that lives on or in a host and causes harm to the host |
| host | an organism that provides a source of energy or a suitable environment for a virus or for another organism to live |
| primary succession | the changes that occur in an area where no ecosystem had existed |
| secondary succession | the changes that occur after a disturbance in an ecosystem |
| pioneer species | the first species to populate an area |
Created by:
leannezecco
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