What is required in order to be biologically fit?

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

20 the compound al(nh3)2 has atoms of nitrogen.

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.