@josehanyAge Definitions, age definitions are as follows:
• Infants: younger than 1 year of age (excluding newly born infants in the delivery room)
• Children: 1 year of age to puberty (signs of puberty are chest or underarm hair in males; any breast development in females)
• Adults: adolescents (ie, after the onset of puberty) and older
Simply you can identify by images
Adding something related to cpr
If u have any doubts replay . Will reach u asap
Data taken from AHA And ai also.