The calcium in your bones is the same calcium in the carbonate rock. The salt in your blood is the same as the salt in the sea. From this we learn that all life is related by birth. And what unites all life is water. Dr. Lynn Margulis contends that the planet should not be called Earth but Water.
Life is here because of water.
No biochemical or geological process works without water. No creature can survive without water. Its specific chemical and physical properties make life possible. This is why ice floats. If water had its maximum density at 0 o C. all lakes would freeze solid.