What causes darkening of the skin as melanin production increases

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

Why would a drug the damages capsids treat a viral infection

Why are common names a problem for scientist?