2. Factors affecting people's physical and mental development and their functions.
3. Factors affecting people's physical and mental development and their functions.
4. Factors affecting people's physical and mental development and their functions.
1. People's physical and mental development is influenced by many factors, mainly including heredity, environment, school education and individual's subjective initiative.
2. Heredity provides possibility and plasticity for people's physical and mental development, and environment provides many possibilities for people's physical and mental development. School education plays a leading role in people's physical and mental development.