The document discusses the life cycles of several insects: - The grasshopper's life cycle has 3 stages - egg, nymph, and adult. The nymph hatches from the egg and grows wings as an adult over 4-7 weeks. - The mosquito's life cycle has 4 stages - egg, larva, pupa, and adult. The larva hatches and grows in water before becoming a pupa then adult. - The cockroach's life cycle mirrors the grasshopper's with 3 stages - egg, nymph, and adult. The nymph hatches and molts its skin 8 times before becoming an adult. - The housefly's life cycle also has 4