1. Most invertebrates, as well as many fish and amphibians, start life as larvae .
2. These look unlike their parents, often live in different habitats, and eat different food. They then undergo a total change of body form and appearance, called complete metamorphosis.
3. A gradual change in body shape, called incomplete metamorphosis, occurs in many insects.
4. These hatch into miniature but immature versions of their parents, and progress through a series of moults to adulthood.
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