Heme iron is found only in foods derived from the flesh of animals, such as meats, poultry, and fish. a. true b. false

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.

What is the process by which biological parents pass traits such as hair type or eye color to their children

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.