Describe the factors that affect species richness. Describe the parameters that would probably ...

Answer to q. 1

Concepts to Consider: Species richness increases with the number of potential ecological
niches and the area of the habitat, but is inversely related to the amount of geographical
isolation and the environmental stress of the habitat; species richness is greater in ecotones
due to the edge effect; species richness is greater in old, stable communities. Rain forests are
stable, old, typically continental habitats, and have very high species richness.

Answer to q. 2

Concepts to Consider: In mutualism, benefits are conferred to both species involved (Do the
mites benefit? Do humans benefit from mites living in our skin?). Commensalism involves a
benefit to one partner and no benefit or harm to the other partner (If the mites benefit, do we
notice their presence?). Parasites benefit from the host, which is harmed to some degree
(Assuming the mites benefit, are we harmed?).

Oh god, I was lost before coming here. Thanksss

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