Soil particles vary greatly in size, and soil scientists classify soil particles into sand, silt, and clay. Starting with the finest, clay particles are smaller than 0.002 mm in diameter. Some clay particles are so small that ordinary microscopes do not show them. Silt particles are from 0.002 to 0.05 mm in diameter.
The answer is D . Pressure causes water and dissolved substances to filter though capillary walls of the glomerulus .
Continental drift happened around the Jurassic period, 175 million years ago.
<span />
1983-1984 was when it was discovered