The beaks of finches found on various Galápagos Islands differed based on ?

the food that they ate

Explanation:

The beaks of finches found on various Galápagos Islands differed based on the food that they ate. The finches that survived on eating different larger nuts had strong beaks for breaking the nuts open. While the Finches that ate smaller type nuts and seeds had beaks for cracking nuts and seeds. This also applied to other types of animals as well, each adapting to its own necessities.

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.