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ecology
ecosystem
28
Biology
10th Grade
09/26/2012
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Term
Ecology
 Definition
study of relationship among organisms
Term
biosphere
 Definition
all the regions of earth where life can exist
Term
species
 Definition
interbread and produce fertile offspring
Term
population
 Definition
all members of the same species that live in the same area
Term
community
 Definition
all populations of organisms living in the same place
Term
ecosystem
 Definition
all biotic and abiotic factors
Term
biome
 Definition
like the ecosystem
Term
autotroph
 Definition
energy used form the sun
Term
heterotroph
 Definition
eat producers to get their energy
Term
producer
 Definition
start of the food chain
Term
consumer
 Definition
get energy by eating food
Term
tropic levels
 Definition
at the bottom of the pyramid
Term
herbivore
 Definition
eats plants
Term
carnivore
 Definition
eats meat
Term
omnivore
 Definition
eats both plants and meat
Term
detrivore
 Definition
scavanger
Term
biomass
 Definition
how much biomass each level has
Term
symbiosis
 Definition
when one organism benefits
Term
mutualism
 Definition
both organisms benefit
Term
commensalism
 Definition
when one benefits and the other is not affected
Term
parasitism
 Definition
one organism benefits at the expense of the other
Term
ecological pyramids
 Definition
shows how each level decreases
Term
biotic
 Definition
animals
Term
abiotic
 Definition
non living things
Term
habitat
 Definition
where the animal lives
Term
niche
 Definition
role in the environment
Term
food chain
 Definition
shows the direction where the energy is going
Term
food web
 Definition
shows what eats what
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