The Miracle of Reproduction 1963 免费无限访问
It discusses the miracle of reproduction in nature, emphasizing that all life begins from tiny eggs. It illustrates the reproductive processes of plants, fish, birds, and mammals, detailing how pollen fertilizes seeds in flowers, how fish use milt to fertilize eggs, and how birds and mammals have unique methods for reproduction. It explains human reproduction, including the menstrual cycle, fertilization, and the development of a fetus in the mother's womb. The narrative concludes by highlighting the significance of love and marriage in raising children, showcasing the continuity of life through reproduction.
运行: 15 分钟
质量: HD
释放: Jan 01, 1963
国家: United States of America
语言:
关键词 : reproduction
