The total earth’s surface covered by water is
(a)
(b)
(c)
(d)
Earth is known as the "Blue Planet" because 71 per cent of the Earth's surface is covered with water. Water also exists below the land surface and as water vapour in the air. The earth has an abundance of water, but unfortunately, only a small percentage (about 0.3 per cent), is even usable by humans.
Hence, the correct option for this question is option A