Question

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

Answer 1

D), the large ears of the desert rat give off heat, is the correct answer. The other answers are behavioral adaptations.

Answer 2

The answer is d:the large ears of the desert rat give off heat. Choice a,b, and c are behavioral adaptations.