| http://www.w3.org/ns/prov#value | - Age of onset of puberty is influenced by many factors such as genetics, nutritional status, ethnicity and environmental factors including socio-economic conditions and geographical location.[1][47] A decline of age at onset of puberty from 17 years of age to 13 years of age has occurred over a period of 200 years until the middle of the 20th century.[1][14][46] Trends toward earlier puberty have b
|
