What are environmental and developmental stages of insects?

Insects undergo various environmental and developmental stages, primarily characterized by metamorphosis. There are two main types: complete metamorphosis, involving four stages—egg, larva, pupa, and adult—and incomplete metamorphosis, which includes three stages—egg, nymph, and adult. Environmental factors such as temperature, humidity, and food availability significantly influence these developmental stages. The transition between stages allows insects to adapt to their surroundings and optimize survival and reproduction.