Question

what is osmoregulation? where it happends nd why

Answer 1

osmoregulation is a procees in which exess water and salts are removed from our body.
this process is done by kidney
it is on for the removal of form urea and water from the body

Answer 2

osmoregulation means the physical process that an organism uses to maintain water balance
it happens to control the water balance in body fluids
kidney are the vertebrae osmoregulatary organ