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Which statement best describes a structural adaption

a) birds migrate south to avoid a cold winter
b) a ground squirrels heart rate slows during hibernation
c) snakes sunbathe during the day to increase their body temperature
d) the large ears of the desert rat give off heat

2 Answers

1 vote
D), the large ears of the desert rat give off heat, is the correct answer. The other answers are behavioral adaptations.
User Inodb
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The answer is d:the large ears of the desert rat give off heat. Choice a,b, and c are behavioral adaptations. 
User Soundswaste
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