Your blood pressure is 68/38 and you fainted after donating a unit of blood. You are likely experiencing low preload from loss of blood volume. You understand preload to mean the amount of: a) blood ejected from each ventricle with each contraction
b) blood pumped by each ventricle in 1 minute
c) venous return to the heart
d) resistance to ventricular emptying

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.

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explanation: bc blah

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.