Animals That Swim Expend Less Energy to Move Than Do

question 23

Multiple Choice

Animals that swim expend less energy to move than do animals that walk or fly because

• A) water provides less resistance than air.
• B) gravity has more impact on aquatic animals than it does on terrestrial animals.
• C) aquatic animals do not have to use muscles to move their fins and tails.
• D) the streamlined shape and nonstick surfaces of aquatic animals reduce resistance due to drag.

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Definitions:

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