Which word pair makes the following statement true? the process of leads to the formation of new species by a) extinction, speciation b) speciation, use and disuse c) natural selection, evolution d) divergent evolution, natural selection

The energy needs of a human population are not affected by

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

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm