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Lesson 3

Natural selection The progress by which organisms that are best adapted to their environment are most likely to survive and reproduce.
Adaptation An inherited behavior or physical characteristic that helps an organism survive and reproduce in it's environment.
Niche How an organism makes its living and interacts with the biotic and abiotic factors in its habitat.
Competition The struggle between organisms to survive as they attempt to use the same limited resources in the same time.
Predation An interaction in which one organism kills another for food or nutrient.
Predator An organism that does the killing in a predation interaction.
Prey An organism that is killed and eaten by another organism in a predation interaction.
Symbiosis Any relationship in which two species live closely together and that benefits at least one of the species.
Mutualism A type of symbiosis in which both species benefit from living together.
Commensalisam A type of symbiosis between two species benefits and the other species is neither helped nor harmed.
Parasitism A type of symbiosis in which one organism lives with, on, or in a host and harms it.
Parasite The organism that benefits by living with, on, or in a host in parasitism interaction.
Host An organism that a parasite lives with, in, or on, and provides a source of energy or a suitable environment for the parasite to live.
Created by: cel201118894