How far beneath the surface does shale metamorphose to slate?

How does oxygen move from the respiratory system to the circulatory system? a. by pumping through the heart b. by circulating in an artery c. by moving across a synapse d. by diffusion across a capillary wall

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.