Regeneration is the process by which living organisms can repair or replace damaged tissues or even entire body parts. For example, some species of salamanders can regrow lost limbs, while certain types of starfish can regenerate lost arms. This remarkable ability helps them survive in their environments and recover from injuries. In addition to animals, regeneration also occurs in plants. When a tree is cut down, it can sprout new shoots from its stump, allowing it to grow again. This natural process is essential for ecosystems, as it helps maintain biodiversity and supports the health of various habitats.