The Living World 6th Edition by George Johnson, Jonathan Losos,William Ober,Claire Garrison

تمرين 7

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 bonds.
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; this is because of osmosis.
D) slowly disperse throughout the water; this is because of diffusion.