Which substance will cause litmus paper to turn red?

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal response by in order to it's core temperature.