Smoking cigarettes significantly increases your chances of getting lung cancer. Average global temperatures have increased over the past 100 years. Burning fossil fuels is the primary cause of recent global warming. A nurse is asked to draw 3.5 cc of blood from 5 different people. The amounts of blood he actually draws are 4.2 cc, 4.5 cc, 4.3 cc, 4.5 cc and 4.4 cc.
Several explanations are possible.
For example, the batch of syringes used by the nurse may be mislabeled or poorly marked. Or the nurse is sighting the syringe consistently from a bad angle. Carry out the following conversions to the correct number of significant figures. Show your work. That's why we need scientific notation here.