True or false? the technology known as sonar allowed hess and other to map out the ocean floor for the first time proving it was not flat as previously thought.

i think it is true in my reasonment ..

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.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;