Cardiovascular health. Cherry is a rich source of flavonoids, antioxidants and potassium. Eating cherry proves beneficial to the heart. It strengthens the nervous system and reduces bad cholesterol thus prevent blockage in the flow of blood. So it is effective to prevent heart attack, hypertension and stroke.
Scientific notation is needed any time you need to express a number that is very big or very small. Suppose for example you wanted to figure out how many drops of water were in a river 12 km long, 270 m wide, and 38 m deep (assuming one drop is one millilitre).
What are the uses for it in the work field? Scientific notation was not created, in the sense of someone coming up with something new. The fact that happens to equal 30000 is a mathematical truth, not a creation. The question becomes, though, when did it become commonplace to write the first form instead of the second form. (It would be sort of like people starting to write 2+3 whenever they meant 5; that's not creating something new, merely saying something in a different way). I do not know who first used scientific notation.