Expressed as a numerical value, the probability of an event can be no less than 0, and no greater than 1. A probability of zero means that an event will definitely not happen, while a probability of...
Yes. A nanogram is 10-9 grams. A picogram is 10-12 grams. And there are smaller units still. It might come down to whether or not we can measure them or whether we can just estimate a mass smaller...