7th Science - Ch. 9 "Interactions of Living Things"

Terms in this set (20)

abiotic factor
a nonliving part of an ecosystem
atmosphere
mix of gases surrounding a planet
biome
geographic area that contains ecosystem with similar biotic and abiotic features
biotic factor
a living or once-living thing in an ecosystem
community
all the populations living in an ecosystem at the same time
ecosystem
all the living and nonliving things in one place
population
all the members of one species living in an area
succession
gradual change from one community to another
community in an area
biotic potential
growth of a population, in perfect conditions
with no limiting factors
carrying capacity
largest number of individuals of one species that an ecosystem can support over time
habitat
Place where an organism lives
limiting factor
Limits the growth of a population
niche
ways that an organism survives, obtains food and shelter, and avoids danger
symbiotic relationship
two different species live together in a close
relationship over a long period of time
consumer
An organism that obtains energy by feeding on other organisms
energy pyramid
model showing the amount of energy available at
each step of a food chain
food chain
model showing how food energy flows in an ecosystem through feeding relationships
food web
model showing several connected food chains
producer
An organism that makes its own food
transform
to change in composition or structure
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