Which term best describes the movement of the matter due to temperature differences in the sun? Group of answer choices

nuclear fusion

conduction

convection

radiation

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

How many major plates cover the earth

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.