Question

how does the amount of a resource affect the competition over it?
the rarer the resource is, the smaller the competition.
the more common the resource is, the greater the competition.
the rarer the resource is, the greater the competition.
the amount of a resource does not affect competition over it.

Explanation:

Competition occurs when organisms or entities need a limited resource. When a resource is rare (in low quantity), more individuals/entities will compete to obtain the scarce resource, as it is not readily available to all. Conversely, common resources are abundant, so there is less need to compete for them.

Answer:

C. The rarer the resource is, the greater the competition.