Which of these sentences is true with respect to species?

two organisms belong to the same species even if they are separated by a geographical barrier, as long as they can mate and produce sterile offspring.

two organisms belong to the same species even if they are separated by a geographical barrier, as long as they can mate and produce fertile offspring.

two organisms belong to different species if they are separated by a geographical barrier, even if they can reproduce and produce fertile offspring.

Melissa lives in a town called greendale. she discovers that when she lights a match and holds it near her kitchen faucet, the little flame grows into a larger fire. melissa is surprised because she thought the water would extinguish the flame rather than ignite it further. her mother tells her that the water might be contaminated with dissolved methane, a primary component in natural gas. melissa investigates the matter and finds that cases of methane contamination started shortly after a company began fracking for natural gas in the area. based on this information, which three statements are plausible consequences of fracking in greendale?

Why does miranda have that particular vision of dr hildesheim answer?

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?