H
haley
Guest
I'm doing a project where I get some custard cups and I boil tomato soup and then put 2 tablespoons of soup into each cup. Then I expose one cup to air for 1/2hr., touch a dirty finger into another cup, touch a clean finger into another cup, touch a finger to the floor and then into another cup, and put some bread crumbs into another cup. I could also choose to add more variables if I wanted to. So then I just watch the mold grow and make observations. But my question is, how long should I watch the mold grow?? That's the one thing that the book I have doesn't tell me. I don't really know much about mold and stuff, so does anybody know how many weeks I should observe the growing mold for my science fair project?????