All organisms require certain nutrients for survival and reproduction. suppose a particular bacterial population thrives only in the top five millimeters of lakes. suppose a microscopic plant population also thrives only in the top five millimeters of lakes. when the bacterial and plant populations are floating together, the bacterial population is reduced to 20% of the number it was when floating in the absence of plants. what does this situation likely illustrate?
It's likely an illustration of competition. Bob the plant and bacteria must fight for the same resources, and neither population can take full advantage of the resources available.