The body cannot live outside the habitat. The embryo develops in environmental conditions characteristic of individuals of this species and outside these conditions, its development may be disturbed or stopped. A developing organism is influenced by environmental factors such as temperature, oxygen and carbon dioxide concentration, ionic composition of water (for aquatic organisms), and insolation rate. for mammals, including humans, the health of the mother, in whose body development occurs, is important. The use of alcohol, tobacco, and, in particular, toxic substances of foreign drugs, negatively affects the nature of intrauterine development.
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.