Which of these is an opinion? A. Scientists have measured the flow from the largest rivers around the world.
B. The Arctic Ocean showed a sizeable rise in the fresh water flow it received.
C. Rivers supply important nutrients to oceans and have an effect on salt levels.
D. It is most important to study streamflow in places where many people live.

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

Types of scientific inquiry that biologist engage in that cannot be completely controlled

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.