Final answer:
Insects' metamorphosis involves dramatic life cycle changes, with complete metamorphosis such as in butterflies offering survival advantages by reducing competition and improving ecological niche exploitation.
Step-by-step explanation:
Metamorphosis in insects is a biological process involving a dramatic change in the animal's body structure through different stages of its life cycle. An example is the butterfly, which undergoes complete metamorphosis, transforming from egg to larva, then pupa, and finally to the adult form. This adaptation offers several survival advantages, such as reducing intraspecific competition by separating the habitats and diets of immature stages and reproductive adults, and it can enhance survival rates during hostile conditions by allowing different stages to exploit diverse ecological niches.