A-A+
According to paragraph 3 why do many marine a
问题详情
According to paragraph 3, why do many marine animals require a layer of blubber？
A．Because marine animals have lost their hair during evolution
B．Because heat is lost in water twice as fast as it is in air
C．Because dry hair does not insulate marine animals
D．Because they are so large that they require more insulation请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析："The loss of heat to water occurs 50 to 100 times more rapidly than heat loss to air." Choice A is not correct because hair loses insulating power when wet, but the evolution of marine animals is not mentioned. Choice C is not correct because dry hair insulates better than wet hair. Choice D is not correct because there are land animals that are of similar size.
