Some Fish Give Off a Chemical When Injured That Signals

question 34

Multiple Choice

Some fish give off a chemical when injured that signals to other fish that a predator is nearby.The chemical causes the uninjured fish to group together in a tight formation,move to the bottom of the water,and cease movement to make it less likely that they will be preyed upon.

• A)This is communication using a chemical signal.
• B)This is a futile attempt by the fish to survive.
• C)This is an unnecessary action since the predator already has killed its prey.
• D)This is a visual signal to the predator that they are prey items.
• E)This behavior will only work one time.

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