Which property (quality) of fossils allows scientists to determine the relative ages of rock layers? A. Fossils show change over time as species evolve.
B. Fossils form from the remains of living organisms.
C. Fossils are usually found only in sedimentary rock.
D. Fossils can be analyzed to determine their exact age

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

What substance acts to prevent sudden ph changes in bodily fluids?