18.3 Types of Interactions. Limiting Factors & Carrying Capacity Limiting Factor – something that...
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Transcript of 18.3 Types of Interactions. Limiting Factors & Carrying Capacity Limiting Factor – something that...
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18.3 Types of Interactions
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Limiting Factors & Carrying Capacity
Limiting Factor – something that limits the size of a population Ex: Food, Water, Space
Carrying Capacity – the largest population that an environment can support.
Limiting factors influence the carrying capacity.
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Competition
Competition occurs when two organisms try to use the same resources.Can be within a population or a community
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Predation Prey – organism that is
killed & eaten by another
Predator – organism that kills another for food.
Predators have adaptations that help them capture their prey (i.e. speed, sharp teeth, claws).
Prey also have adaptations to protect themselves (i.e. camouflage, poison).
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Symbiosis
Symbiosis is the long term association or relationship between organisms that benefits at least 1 organism.
3 Types: Mutualism, Commensalism, Parasitism
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Mutualism
Symbiotic relationship in which both organisms benefit.
Example: Egyptian Plover &
the crocodile
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Commensalism
Symbiotic relationship in which one organism benefits and the other is unaffected.
Example: Whale Shark &
Golden Trevallys
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Parasitism
Symbiotic relationship in which one organism benefits and the other is harmed.
Example: Ant & Parasitic Fungus
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Comprehension Check
How do limiting factors affect the carrying capacity?
How are the three types of symbiosis different?
How are predation and parasitism different?