In biology, regeneration<span> refers to the process by which plants and </span>animals<span> replace lost or damaged parts by growing them anew. Some </span>animals can regenerate<span> their limbs, tails, or even parts of internal organs, such as the liver. In plant </span>regeneration<span>, neighboring cells replace missing tissue.</span>
The situation is impossible mainly because we can't see Figure P6.10 . It would undoubtedly be the same story on an another planet, until we see the figure and understand what's going on.