HELPP MEEE 8. A sample of an unknown substance has a volume that is independent of its container.
Which additional information is needed to determine the state of the sample?
A. the mass of the sample
B. the density of the sample
C. whether the sample has a fixed shape
D. whether the sample conducts electricity

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.