keeping their grip with microscopic hooks on their fins. 它们用鳍上的小钩紧紧抓住岩壁 Food is often in short supply 食物总是很紧缺 and troglodytes like the crab 像螃蟹这样的穴居动物 have to survive on whatever washes into the cave from outside. 必须得吃任何从外边冲进洞内的东西 The salam...
Food is often in short supply 食物总是很紧缺 and troglodytes like the crab 像螃蟹这样的穴居动物 have to survive on whatever washes into the cave from outside. 必须得吃任何从外边冲进洞内的东西 The salamander might not encounter food for several months, 童态河溪螈可能 已有几个月没有吃东西了 s...
and troglodytes like the crab 像螃蟹这样的穴居动物 have to survive on whatever washes into the cave from outside. 必须得吃任何从外边冲进洞内的东西 The salamander might not encounter food for several months, 童态河溪螈可能 已有几个月没有吃东西了 so when something does come along 所以只要眼...
But the blind salamander has other highly developed sensory organs. 不过这些瞎眼的蝾螈 进化出了其它发达的感觉器官 Receptors in their skin detect minute movements in the water made by its prey. 皮肤上的探测器能觉察到 猎物引起的最微小的水流变化 External gills help it to breathe in water ...
Receptors in their skin detect minute movements in the water made by its prey. 皮肤上的探测器能觉察到 猎物引起的最微小的水流变化 External gills help it to breathe in water that is particularly low in oxygen. 外生的鳃帮助它们 在极度缺氧的水中呼吸 The cave angel fish feed on bacteria...
External gills help it to breathe in water that is particularly low in oxygen. 外生的鳃帮助它们 在极度缺氧的水中呼吸 The cave angel fish feed on bacteria in the fast flowing water 洞穴天使鱼以急流中的细菌为食 keeping their grip with microscopic hooks on their fins. 它们用鳍上的...
they have all not only lost the pigment in their skin, 它们不仅失去了皮肤色素 but also their eyes. 眼睛也退化了 It takes thousands of generations for eyes to be lost, 眼睛的退化需要经历数千代的演变 so these species must have been isolated for a very long time. 所以这些物种必定 与世...
but also their eyes. 眼睛也退化了 It takes thousands of generations for eyes to be lost, 眼睛的退化需要经历数千代的演变 so these species must have been isolated for a very long time. 所以这些物种必定 与世隔绝了相当长的一段时间 But the blind salamander has other highly developed sen...
It takes thousands of generations for eyes to be lost, 眼睛的退化需要经历数千代的演变 so these species must have been isolated for a very long time. 所以这些物种必定 与世隔绝了相当长的一段时间 But the blind salamander has other highly developed sensory organs. 不过这些瞎眼的蝾螈 进化出了其...
so these species must have been isolated for a very long time. 所以这些物种必定 与世隔绝了相当长的一段时间 But the blind salamander has other highly developed sensory organs. 不过这些瞎眼的蝾螈 进化出了其它发达的感觉器官 Receptors in their skin detect minute movements in the water m...