Microevolution is occurring when: a bird has a beak of a particular size that shrinks during a drought allele frequencies change in a population occur over generations gene flow evenly transfers alleles between populations individuals within all species vary in their phenotypic traits

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.