I’m assuming you mean if the sun dies out. If so, then most things on earth would die within a few days due to lack of photosynthesis and to freezing temperatures (which is what would cause humans to die).
Limiting factors are what controls the population of an ecosystem. It also limits the kind of organisms that inhabit it. Limiting factors can be abiotic or biotic. Abiotic factors are the nonliving factors that affect the living ones. From the given options above, the only biotic limiting factor is vegetation. The correct answer would be option B.
Now if you are talking about cells then Eukaryotic cells<span> contain membrane-bound organelles, including a nucleus. </span>Eukaryotes<span> can be single-celled or multi-celled, such as you, me, plants, fungi,and insects. Bacteria are an example of </span>prokaryotes<span>. </span>Prokaryotic cells do<span> not contain a nucleus or any other membrane-bound organelle.</span>