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-$350. These cards are condition sensitive due to the colored border. A great card and a great investment.
How much is a Series 1995 twenty dollar bill worth? They are worth the face valued 20$. 1995 is a little older, but general collectors look for at least 30 to 40 years older than the current currency before bill has a chance of â¦ being worth more than face value. And even then, you might be making a few extra dollars.