Water leaves the internal cavity of a sponge through the

Select the word from the list that best fits the definition process that takes place at mid-ocean ridges sea floor spreading continental drift magnetic reversal magnetic minerals fossils

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

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.