Relationship between organisms that
share the same habitat and niche.

The competitive exclusion principle tells us that two species can't have exactly the same niche in a habitat and stably coexist.

Explanation:

That's because species with identical niches also have identical needs, which means they would compete for precisely the same resources.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.