Energy input from the cell

A. Transport protein.
B. Plasma membrane.
C. Side with higher concentration of square molecules.
D. Side with lower concentration of square molecules.

Which properties describe all matter?

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.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above