Pick all that apply in a balanced ecosystem the number a. producers is greater then the number of consumers. b. consumers is greater then the number of producers. c. primary consumers is greater then the number of secondary consumers. d. secondary consumers is greater then the number of tertiary consumers. e. tertiary consumers is greater than the number of primary consumers. choose multiple.

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.