Ammonia is a hydride,(Nitrogen hydride). It is also a base and <span>because it is a soluble base it is an alkali</span>
C6H12O6 (glucose) is the answer you are looking for
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.
I am not sure but here is a link that should help :)
https://www.ncbi.nlm.nih.gov/pubmed/9971764