SCIENCE 4 · 2021. 3. 3. · SCIENCE 4 . Interaction Between Living Things . An ecosystem is a...
Transcript of SCIENCE 4 · 2021. 3. 3. · SCIENCE 4 . Interaction Between Living Things . An ecosystem is a...
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SCIENCE 4
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Interaction Between
Living Things
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An ecosystem is a community of interacting organisms and their environment.
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Living things (biotic factors) interact with each other.
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With non-living things (abiotic factors) like soil, water and air.
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Beneficial Interactions Mutualism - occurs when both organisms benefit from an
interaction. Examples: ox pecker—zebra, bee—flower, sea anemone—clownfish
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Beneficial Interactions Commensalism—One organism benefits from an
interaction, but the other gets nothing. Examples: remoras—shark, Orchids—trees
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Harmful Interactions Parasitism—one organism, the parasite, is benefited and
the other organism called the host is harmed. Examples: Dog—ticks, mosquito—human
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Harmful Interactions Predation—This is an interaction in which one organism,
called the predator, hunts and eats another organism called the prey.
Examples: Tiger—deer, bear—fish
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Harmful Interactions Competition—Type of interaction where two or more
organisms compete with each other for things like food and shelter. One or both organisms may be harmed.