The surface layer of the water freezes solid creating a barrier that insulates the ice below so that it keeps a steady temperature usually a few degrees above freezing (32 degrees).
By intruding mutations, which are the ultimate source of biological diversity. I think this is it.
<span>Dehydration is detected by osmorectors in the (hypothalamus)</span>
<span>The more similar the embryonic development of two species, the more closely they are related.</span>
