where an organism lives
when both species benefit
a system formed by the interaction of a community of organisms with their environment
an organism's "job"
study of relationships between organisms and their environment
an organism that only eats plants
weight of matter in any given feeding step
one species benefits and the other is neither harmed nor benefitted
nonliving things in the environment
total number of organisms of the same species
model that shows feeding relationships
organism that uses light to make its own food
one species benefits and the other is harmed
the living together of two dissimilar organisms
part of the earth that can support life
living things in the environment
an organism that eats both plants and animals
another name for a decomposer
any class of organisms that occupy the same position in a food chain
an organism that eats only meat
an organism that lives off of dead and decaying organisms
shows how energy travels through an ecosystem
an organism requiring organic compounds that it gets from other organisms by eating them
all the populations of different species occupying a single ecosystem
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