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.
== 1990 Pro Set Emmit Smith Rookie Football card number 685 == A 1990 Pro Set Emmit Smith rookie football card number 685 has a book value of about $5.00 in near/mint -mint condition. Professionally graded cards will sell for more money than a non-graded card in the same condition. Condition is important.