Complete metamorphosis is a biological process that some insects undergo, involving four distinct life stages: egg, larva, pupa, and adult. In this process, the insect starts as an egg, which hatches into a larva. The larva often looks very different from the adult and primarily focuses on eating and growing. After the larval stage, the insect enters the pupa stage, where it undergoes significant transformation. Inside the pupa, the insect's body is reorganized to form the adult structure. Once this transformation is complete, the adult insect emerges, ready to reproduce and continue the life cycle.