Ecosystems
Vocabulary
Population Density
The average number of specific organism that
live in a certain area
Biotic
Fish
Coral
Describes living factors in the
environment
Abiotic
Water
Sand
Describes the nonliving part of the
environment, including water, rocks, light,
and temperature
Organism
A single, living thing
Organism
Insert
your
photo
here.
A single, living thing
Population
A group of organisms of the same species
that live in a specific geographical area
Community
All the populations of species that live in the
same habitat and interact with each other
Ecosystem
A community of organisms and their abiotic
environment
Biosphere
The part of Earth where life exists
Carrying Capacity
The largest population that an ecosystem can
support at any given time
Symbiosis
A relationship in which two different
organisms live in close association with
each other
Mutualism
The bee gets
pollen
The flower gets
pollinated
A relationship between two species in which
both species benefit
Commensalism
A relationship between two organisms in
which one organism benefits and the other
is unaffected
Parasitism
The tomato hookworm will be
eaten alive
The baby wasps will
get food
A relationship between two species in which
one species, the parasite, benefits from
the other species, the host, which is
harmed
Limiting Factors
Food
Water
Space
Resources that limit how big a population
can get
Adaptation
Fish swim in
schools to
appear bigger
and ward off
predators.
Organisms have to adapt (change for the
better) in order to survive
Oxidation
A chemical reaction in which an element
combines with oxygen
Habitat
Where an organism lives
Niche
The role or function of a species within an
ecosystem
Autotroph
An organism capable of making nutrients for
itself from an inorganic sources (example:
photosynthesis)
Carbon Cycle
The exchange of carbon between the
environment and living things
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