The development of the embryo of reptiles begins in the egg, which at this time is still in the mother’s body. He gets food from the egg. At the time of laying, the egg already contains a developed embryo.
Some species of sea snakes are viviparous, the embryo is in the mother’s body and receives nutrients from her.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.