the movement of molecules of a particular substance from regions of high concentration to regions of low concentration of that substance, i.e. down a CONCENTRATION GRADIENT. The rate of diffusion in gases is much greater than in liquids, due to differences in their molecular structure.
1990 Score Supplemental Emmitt Smith rookie card. This is Emmitt Smithâs best rookie card. You can find these football cards on Ebay in Gem MT 10 condition for about $300-$350. These cards are condition sensitive due to the colored border. A great card and a great investment.
His cards are the pride and joy of most Cowboys card collectors. Much like Emmitt Smith rookie cards, there is more than one Troy Aikman rookie card to choose from. Here is a list of the best and most expensive Troy Aikman rookie cards with their current values. This is the best Troy Aikman rookie card because it is the hardest one to find.