Which contains the least diversity of species a)class, b)order, c)family, d)phylum

How do cells grow and reproduce to maintain homeostasis?

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d