Which layer of the earth's atmosphere, is furthest away from the surface of the earth?

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis