Explain briefly why the knowledge of Rhesus factor is important in marriage counseling

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

If the dimensions of a cube-shaped cell with a length,height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6