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Transcript 
SYMBIOSIS NOTES
Relationships among organisms
in a community:
Predation
 One population (predator) captures and
feeds upon another population (prey)
Competition
 Two populations struggle for the same
resource
Symbiosis
 When one species lives in close
association with another species over a
period of time
3 TYPES OF SYMBIOSIS
MUTUALISM
Relationship
in which
both species
benefit
MUTUALISM
Ex.
Honeybees/
Flowers
MUTUALISM
Ex.
Ostrich/
Gazelle
PARASITISM
 Relationship
where one
species is helped and the
other is harmed
PARASITISM
 Ex.
Dogs/Ticks
PARASITISM
Ex.
Mistletoe/
Spruce Tree
COMMENSALISM
 Relationship
in which one
species benefits and the
other is neither harmed nor
helped
COMMENSALISM
Ex.
Whale/Barnacle
COMMENSALISM
 Ex.
Hermit Crab/
Snail Shell
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