What is a mollusk larva covered in cilia to help it swim?
trocophore
nephridia
mantle

What is the next step in muscle contraction after the actin changes shape? (apex)

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 factors contribute to the effect an environmental toxin has on the human body?