After being introduced in the 1930’s the fire ant became established throughout much of the southern United States. One biological way to control fire ants might be to introduce organisms that are
A mutualistic to fire ants
B None of the above
C produce food for fire ants
D parasitic to fire ants

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.