Translations:Investiture Achievement/Voyager/Nature Study/6/en
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b) butterfly larvae, or caterpillars, consume plant leaves and spend practically all of their time in search of food. Caterpillars mature through a series of stages called instars. Near the end of each instar, the larva undergoes a process called apolysis, in which the cuticle, a tough outer layer made of a mixture of chitin and specialized proteins, is released from the softer epidermis beneath, and the epidermis begins to form a new cuticle beneath.
