Observe the slide under low power and the medium power. How can you tell the cells are dividing?

Which type of stimulus do mechanoreceptors detect? sound pain heat light

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.

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%