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ecology
the study of interactions of living organisms with one another with their environment
biotic
describes living factors in the environment
abiotic
describes the nonliving part of the environment, including water, rocks, light, and
temperature
population
a group of organisms of the same species that live in a specific geographical are and
interbreed
community
all the living organisms in an area
ecosystem
a community of organisms and their abiotic environment
biosphere
the part of Earth where life exists; includes all of the living organisms on Earth
herbivore
an organism that eats only plants
carnivore
an organism that eats animals
omnivore
an organism that eats both plants and animals
scavenger
an animal that feeds on the bodies of dead animals
producer
makes it own food
consumer
eats other organisms
decomposer
breaks down dead organic matter and absorbs nutrients
Tertiary consumer
highest level consumer on an energy pyramid, usually a carnivore and has no prey
secondary consumer
eaten by a tertiary consumer, usually an omnivore or carnivore and consumers primary
consumers
primary consumer
usually a herbivore and is eaten by a secondary consumer
food chain
the pathway of energy transfer through various stages as a result of the feeding patterns of
series of organisms
food web
a diagram that shows the feeding relationships between organisms in an ecosystem
energy pyramid
a triangular diagram that shows an ecosystem's loss of energy
prey
an organism that is killed and eaten by another organism
predator
an organism that eats all or part of another organism