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NOBLE Vocab1

QuestionAnswer
abiotic factor The nonliving parts of an organism’s environment
biological community made up of interacting populations in a certain area at a certain time
biosphere the portion of Earth that supports living things
biotic factor All the living organisms that inhabit an environment
commensalism a symbiotic relationship in which one species benefits and the other species is neither harmed nor benefited
ecology the study of interactions that take place between organisms and their environment
ecosystem made up of interacting populations in a biological community and the community’s abiotic factors.
habitat the place where an organism lives out its life
mutualism A symbiotic relationship in which both species benefit
niche all strategies and adaptations a species uses in its environment
parasitism A symbiotic relationship in which a member of one species derives benefit at the expense of another species (the host)
population a group of organisms, all of the same species, which interbreed and live in the same area at the same time
symbiosis The relationship in which there is a close and permanent association between organisms of different species
autotroph An organism that uses light energy or energy stored in chemical compounds to make energy
biomass the total weight of living matter at each trophic level
decomposer They break down the complex compounds of dead and decaying plants and animals into simpler molecules that can be more easily absorbed
food chain a simple model that scientists use to show how matter and energy move through an ecosystem.
food web shows all the possible feeding relationships at each trophic level in a community
heterotroph An organism that cannot make its own food and feeds on other organisms
trophic level Each organism in a food chain represents a feeding step
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