Food Resources as a Limiting Factor for Species Distribution

Multiple Choice

Food resources as a limiting factor for species distribution

The snail kite (Rostrhamus sociabilis) is a specialist that feeds on only one specific type of snail.By comparison,the Mallard Duck (Anas platyrhynchos) is a generalist that feeds on diverse food sources.Whereas the snail kite has a very limited range,the Mallard Duck has a very broad range.The snail kite's diet is an example of a(n)

A) limiting factor.
B) range of tolerance.
C) ecological niche.
D) habitat.
E) symbiotic relationship.