Manta Rays,sting Rays,and Eagle Rays Are Similar to Lampreys in That

question 18

Multiple Choice

Manta rays,sting rays,and eagle rays are similar to lampreys in that they have cartilaginous skeletons.How are they different from lampreys?

• A)They have closed circulatory systems.
• B)They have gills.
• C)They have jaws.
• D)They have bony fin lobes.

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Short-run

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Normal Profits

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Profit-maximizing

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Total Profits

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