The structure and function of plasma membranes are primarily based on the arrangement of which macromolecule?

c should be the answer

what in the weirdo : o

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.