I was excited to see this question because I, myself, just learned this the other day. The answer you are looking for is Tokyo.
The answer to this question is B.) China and India. China has apporiximently 700,000,000 people and India has approximently 500,000,000 people. Making up for 36% of the worlds population.
#1) Sand grains can be distinguished from silt grain by ____.
Answer: The answer is size. Sand grains are finer than gravel and coarser than silt. Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. Silt is granular material silt particles are larger than clay but smaller than sand particles, whose mineral origin is quartz and feldspar.