Which best matches objects that a scientist would include on a list describing a forest ecosystem? a) different types of animals and plants and the forest soil

b) one animal species, the soil, water, and nutrients

c) all the living things in the forest ecosystem

d) different types of soil, rocks, and water sources in the forest

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.