A radioactive microwave background.
<span>The correct answer is almost all of earth's surface water exists in the oceans<span>.
97% of all of surface water on Earth is found in oceans.The remaining 3% of all surface water is found in the form of glaciers and icecaps (frozen water bodies), water vapor and fresh water (water from lakes, rivers, ponds, streams, etc.).</span></span>
C. Having a low standard of living