The resource requirements of two plant species, a and b, have been carefully studied. researchers have determined the levels of a particular resource that will support equilibrium levels of each species. species a needs more of this resource to maintain equilibrium than does species b. when these two species are set in competition (under conditions in which this resource is limiting), what is likely to happen to the populations of species a and b? a. species a will displace species b. b. species b will displace species a. c. species a and b will continue to coexist. d. there is not enough information to determine the outcome.