Through parents having intercourse, so the genes are passed on to generation to generation,
Age- younger people have smaller capacity
gender-males have larger capacity
muscle mass
aerobic fitness
diseases of the respitorary system
From the earliest moments of life, the interaction of heredity and the environment works to shape who children are and who they will become.
The complex interaction of nature and nurture does not just occur at certain moments or at certain periods of time; it is persistent and lifelong.
