How and where does the brain evaluate reward value and effort (cost) to modulate behavior?​

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.

How do the sperm cells get from the stigma to the ovules?

Brian made this table to organize his notes on changes of state change of state energy change melting gain freezing lose deposition gain condensation lose