Choose correct statements from the following.

(P)  The Western Ghats have greater amphibian species diversity than the Eastern Ghats.

(Q) Diversity exists at all levels of biological organization ranging from macromolecules within cells to biomes.

(R)  Rauwolfia vomitoria show the genetic variation in terms of potency and concentration of the reserpine produced.

(S)  Norway has a greater ecosystem diversity than India.