Send help Which vessel must be thicker and more muscular to withstand greater
amounts of pressure from the heart?*
aorta
pulmonary vein
inferior vena cava
pulmonary artery

because of

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.