When a plant turns, bends, moves, or grows toward or away from an extrernal stimulus, the action is called?

What are two reasons for why a species might disappear from the fossil record?

Amap's orientation is typically determined by an

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.