Because enzymes connect to their substrate through a lock-and-key system, where the shape of the substrate and the enzyme has to fit like puzzle pieces. Then only the enzymatic reaction can occur.
Because it is able to trap heat or rather absorb infrared. ... I think
Well, recycling is our the way for us to use a material over and over again. That means that we don't need to make the same material, we can just reuse it again by taking the old one and making the new material again. So we don't need to use any human labor, fuel for trucks, or whichever things they need to get plastic, aluminum, wood for paper, etc.
Answer:
1 is the smaller cell and 100 is the larger cell
