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Ecosystems

Interactions of Living Things

QuestionAnswer
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
Created by: ppaull