An amino acid is so named because its central carbon is linked to both an amino group and a

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

this is a good question! i'll do some research and come back when i have the answer!