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

A. To better prevent water loss from the body tissues
B. To enable the shark to orient itself in space and detect prey
C. To keep the shark afloat in the water
D. To better protect the shark from predators
E. To counteract friction as the shark swims through the water


Answer: E

Biology & Microbiology

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