10. When microscope slides are stained to show blood cells, the small red 10 blood cells that appear on the slides are much more numerous than the
large white blood cells. This supports the concept that *
the body's need for white blood cells is less than its need for red blood cells
red cells are more numerous because they are smaller than white blood cells
the nuclei of the white blood cells help them work more efficiently than the red blood
cells, which lack nuclei
each kind of cell is present in the numbers best suited to meet the needs of the body

Liquid water at 25 deg is so rapidly breaking bonds between H2O units and reforming them that extra water molecules get trapped inside the water lattice. This is the reason why liquid water is more dense than solid water.

The bonds in water break more slowly as temperature decreases and the structure tend to trap fewer extra water molecules. At low temperature, more of the water has the same lattice as ice.  

Wikipedia, Water Density

It is possible to have liquid water at temperatures well below 0 deg C. Molecules in this supercooled water are free to move. Bonds are made and broken. The long range structure is not perfect but the short range structure of supercooled water is very much like ice. Adding a crystal to supercooled water causes instantaneous ice formation.

Explanation: :P