Question

The specific gravity of water is 1.0.
True
False

Answer 1

It's True. Anything that has a density less than 1.0 will float in water. Our human body can float because we have a weight or gravity just less than 1.0.

Answer 2

That statement may be considered true. 'Specific gravity' is the ratio of
the density of a substance to the density of a reference substance. The
reference substance is nearly always water, and the ratio of the density
of water to the density of water is obviously ' 1'. So there you are.