If You Rub the Scaled Skin of a Shark, It

question 36

Multiple Choice

If you rub the scaled skin of a shark, it feels rough if you move your hand from tail to head but smooth if you move from head to tail.What is a major advantage of the scales being oriented this way?

• A)to keep the shark afloat in the water
• B)to counteract friction as the shark swims through the water
• C)to better protect the shark from predators
• D)to better prevent water loss from the body tissues

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