When succession first begins habitats have only a few examples of life these organisms are called...

Eutrophication caused by human nutrient pollution.

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.

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.