The Living World 8th Edition by George Johnson

تمرين 9

If you put a drop of food coloring into a glass of water, the drop of color will
A) fall to the bottom of the glass and sit there unless you stir the water; this is because of hydrogen bonding.
B) float on the top of the water, like oil, unless you stir the water; this is because of surface tension.
C) instantly disperse throughout the water due to osmosis.
D) slowly disperse throughout the water due to diffusion.