Human reproduction usually involves
(1)internal fertilization and internal development
(2)external fertilization and external development
(3)internal fertilization and external development
(4)external fertilization and internal development

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.

In a leaf, dermal tissue a) stores food b) stores carbon dioxide c) releases oxygen into the air d) transports water from the roots

Besides regulating what enters and leaves the cell, what is another function of your choice from question #1?