OSMOREGULATION IN VARIOUS ANIMALS - Malay Nayak All animals need to regulate water and salts in their environment and eliminate nitrogenous wastes. All these functions are inter-related, but they have different names. Regulation of water and salts is termed osmoregulation and elimination of nitrogenous wastes is termed excretion . Both excretion and osmoregulation bring about homeostasis, which is vital for life.
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