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Level 13

Interdependence


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Pyramid of Biomass
Pyramid which shows the total dry mass of organisms at each trophic level
Pyramid of number
Pyramid which shows the number of organisms at each trophic level
Mutualism
An relationship in which both organisms benefit
Parasites
Organisms which live on a host and benefit from the host, but the host is damaged
Parasitism examples
Dog & fleas, head lice & human, tapeworm & human, mistletoe & tree
Mutualism examples
Oxpecker & buffalo, cleaner fish & large fish, nitrogen-fixing bacteria & legume, chemosynthetic bacteria & giant tubeworms