The organism that does
the killing in a predation
interaction.
An organism that is killed
and eaten by another
organism.
Any close relationship
between species,
including mutualism,
commensalism, and
parasitism.
The struggle between
organisms to survive as
they attempt to use the
same limited resource.
A type of symbiotic
relationship in which one
organism benefits and the
other organism is not
affected.
A type of symbiotic
relationship in which one
organism benefits and the
other organism is harmed.
A type of symbiotic
relationship in which
both organisms benefit.
Organisms, such as a
green plant or alga, that
uses an outside source of
energy like the Sun to
create energy-rich food
molecules.
Organism that cannot
create energy-rich
molecules but obtains its
food by eating other
organisms.
A series of events in
which one organism eats
another and obtains
energy.
Model that shows the
complex feeding
relationships among
organisms in a
community.