organization
number of organisms of the same species
population
act of on organism trying to eat another
predation
makes its own food
autotroph
each level of energy passing from one organism to another
trophic level
study of interaction between organisms
ecology
all species that exist within a certain location
community
close relationship between two species
symbiosis
has to get its food
heterotroph
a line showing energy moving from producers, consumers, and then finally decomposers
food chain
living factors in an environment
biotic factors
all species and the environment they live in
ecosystem
when both species benefit
mutualism
eats both plants and animals
omnivore
interconnected map showing all potential paths energy can take in an ecosystem
food web
where an animal lives
habitat
all ecosystems of the same type
biome
when one benefits and the other is unbothered
commensalism
eats and consumes internally dead organisms
detritivore
total mass of living matter at each trophic level
biomass
nonliving factors in an environment
abiotic factors
all ecosystems on earth
biosphere
when one benefits and the other is harmed
parasitism
externally breaks down dead organsims
decomposers
chemical substances that an organism must obtain from its environment to sustain life
nutrient
an organisms role/job in its environments
niche