The ion primarily responsible for depolarization in pacemaker cells is whereas the ion primarily responsible for this in other cardiac cells is

Explain the importance of producers, primary consumers, secondary consumers. and decomposers in an ecosystem

On his trip to the galapagos islands, darwin determined that animals on the islands

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.