Maria, Susan, Josh, and LaShonda are exploring in a cave. Suddenly, Susan is injured by a rockslide and requires an immediate blood transfusion. Fortunately, all four are experienced medics and have all the equipment they need to perform a transfusion. Everyone knows his or her blood type. Who should volunteer to provide blood for Susan, and why

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope? a compound microscope has greater magnification ability than a simple microscope. the compound microscope was invented before the simple microscope. a compound microscope is much easier to manufacture than a simple microscope. compound microscopes were more common than simple microscopes.