When farming overgrazing climate change and or seasonal drought change farmland into that cannot support plant life is called

How many types of rock can form from the rock cycle

Which nucleotide component contains nitrogen

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.