Some species of hermit crabs are land hermit crabs while some species are marine hermit crabs. The land species have their physiology suited for a survival on land, and they do not survive within water. Similarly, the water crabs live within water for their life, and they do not survive on land. The reason behind these two contrasting survival philosophies can be pointed to evolution of the species. The land species, due to many years of survival adaptation on land has developed a modified gill
Rabu, 28 September 2011
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