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ES Ch 1 Vocab
Term | Definition |
---|---|
Ecosystem | All the living and nonliving things that interact in an area |
habitats | the place where an organism lives and that provides the things it needs |
biotic factor | a living part of an ecosystem |
abiotic factor | the nonliving part of an ecosystem |
species | a group of organisms that are similar and reproduce to produce fertile offspring |
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 |
immigration | moving into a populatioin |
emigration | moving out of a population |
limiting factors | an environmental factor that prevents a population from increasing |
carrying capacity | the largest population that an area can support |
natural selection | Process by which individuals that are better adapted to the environment are more likely to survive and reproduce than others. |
adaptations | the behaviors and physical characteristics of species that allow them to live successfully in their environment. |
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 |
Predator | The organism that does the killing in predation |
Prey | An organism that is killed in predation |
Symbiosis | A close relationship between species that benefits at least one of the species |
Mutualism | A relationship between two species in which both species benefit |
Commensalism | A relationship between two species in which one species benefits and the other i neither helped or harmed |
Parasitism | A relationship in which one organism lives on or inside another and harms it |
Parasite | The organism that benefits by living on or in a host in parasitism |
Host | The organism that a parasite lives in or on in parasitism |