PARISITISM A symbiotic relationship where the organism lives in or on their host and does harm to their general well being, sometimes parasites are fatal. The parasite benefits, the host does not.
ONE EXAMPLE OF PARISITISM Ticks on a deer.
COMMENSALISM A symbiotic relationship where one species benefits, the other is not affected positively or negatively.
ONE EXAMPLE OF COMMENSALISM Birds nesting in a tree
Certain species of millipede and silverfish inhabit the nests of army ants and live by scavenging on the refuse of their hosts, but without affecting the ants.
MUTUALISM A symbiotic relationship where both organisms benefit from the relationship.
ONE EXAMPLE OF MUTUALISM Bees and flowers
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