Answer :
Osmoregulators actively control salt concentrations despite the salt concentrations in the environment. An example is freshwater fish. ... Some marine fish, like sharks, have adopted a different, efficient mechanism to conserve water, i.e., osmoregulation. They retain urea in their blood in relatively higher concentration.
Osmoregulators actively control salt concentrations despite the salt concentrations in the environment. An example is freshwater fish. ... Some marine fish, like sharks, have adopted a different, efficient mechanism to conserve water, i.e., osmoregulation. They retain urea in their blood in relatively higher concentration..