Why is it logically impossible to prove something true?

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.

a. by using fur or clothes to trap heat energy near the body

and after water is usually warmed by the sun the water temperature raises and then evaporates .