What are the main causes of ontogenesis disorders?

Many factors can cause disturbances in ontogenesis: these are adverse environmental influences affecting the fetus (chemicals, radiation, medication, alcohol and smoking in humans), as well as diseases and infections in the mother.

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.