1) The frog is a representative of the amphibian class. The development of their larvae occurs in the environment (water) due to the nutrients of the fertilized egg.
2) Rabbit – a representative of the class of mammals, which are characterized by intrauterine development.
3) During development, the mammalian embryo is located in the uterus and feeds on the nutrients of the mother’s body.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.