Answer:
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It is for shedding their outer skin or exoskeleton. During the process, they grow and develop. This is controlled by hormones. If these hormones are not formed, their body will become deformed and they will die.
Step-by-step explanation: In many insects in the larval stages, about 5 nos, moulting occurs. The science of moulting is an intricate subject. Man also undergoes hormonal stages in life. But in case of insects, they shed outer skin, to enable them grow, leading to pupal stage and adult stage. Hormones are wonderful chemicals and they play a major role in biology.
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