Going to high power on a microscope decreases the area of the field of view. The field of view is inversely proportional to the magnification of the objective lens.
This is a good question, I feel that a species can only consist of a specific type of organism. Example "dogs" and "wolves" species name is canus lupus and a dog's is canus familiarus. <span>A population can consist of multiple species.
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Typically, utopian societies crumble into dystopias because of civil wars or
corrupt governments. Hope that helps!