Sea Otters Have Been Used as an Example of the "Keystone

question 46

Multiple Choice

Sea otters have been used as an example of the "Keystone Species" concept.This means that sea otters

• A)are the base of the food chain in their ecosystem.
• B)are the dominant species in their ecosystem.
• C)exert a strong influence on the structure and functioning of their ecosystem.
• D)have been recently introduced and are recruiting other new species to the ecosystem.

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Definitions:

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Lumbar Puncture

A medical procedure that involves inserting a needle into the lower part of the spine to collect cerebrospinal fluid for diagnostic testing.

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