Mammal which never drinks water is

A mammals which never drinks water

A mammal that never drinks water is

A terrestrial mammal, who seldom drinks water

A terrestrial mammal, who seldom drinks water

Each of these questions has an Assertion (1) and a Reason (R). Assertion (1) A salt water fish drinks sea water whereas a fresh water fish never drinks water. Reason (R) A salt water fish is hypertonic to its environment while a fresh water fish is not hypertonic to its environment.

Drinking water must be

BOD of drinking water is: