Please show the life stages of human, frog, silkworm and locust with short pictures and words, and talk about their development process? 1? three

1. Frog reproduction, embryonic development and metamorphosis (see figure): 2. Silkworm life goes through four stages: egg, larva, pupa and adult, which is a complete metamorphosis process (see figure). 3. The individual development process of grasshoppers goes through three stages (see figure): 4. The development process of human embryos (see figure):