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Ecology- Elaine

Ecology unit- Science- Elaine Miller

niche how an organism survives, inclucing it's habitat, how it obtains food & shelter, & how it avoids danger
habitat where an organism lives
population all organisms in an ecosystem that belong to the same species
community all populations in an ecosystem
ecosystem all organisms living in an area & the nonliving features of the environment
biosphere part of the Earth that supports life, including the top part of the Earth's crust, all water on Earth, & the surrounding atmosphere
limiting factor anything that restricts the number of individuals in a population
carrying capacity the largest number of individuals of one species that an ecosystem can support over time
ecology the study of interactions that occur among organsims & their environment
producer organisms that use an outside energy source, such as the Sun, to make energy-rich molecules
consumer organisms that can't make their own energy-rich molecules
symbiosis any close relationship between species
mutualism a symbiotic relationship in which both species benefit
commensalism a symbiotic relationship where one organism benefits & the other isn't affected
parasitism a symbiotic relationship in which one organism benifits but the other is harmed
predator consumers that capture and eat other consumers
prey the organism that is captured by the predator
competition fighting for necesary life materials
chemosynthesis the process of making food from chemicals
food chain a way of showing how matter and energy pass from one orgainsim to another
food web a model that shows all the possible feeding relationships among the orgainisms in a community
energy pyramid shows the amound of energy available at each feeding level in the ecosystem
Created by: Elaine Miller