Human development (biology)

ChildNeonate (newborn) (0-30 days)Infant (baby) (1 month-1 year)Toddler (1-4)Primary school age (also called prepubescence) (4-10)Elementary school age (also called middle childhood) (4-9)Preadolescence (preteen, or late childhood. The child in this and the previous phase are called schoolchild (schoolboy or schoolgirl), when still of primary school age.) (10-12)Adolescence and puberty (teenage) (13-19)Young adult (19-25)Adult (exact minimum age may vary)Early adulthood (20-39)Middle age (40-59)Advanced adult/Senior citizen/Old age (60+)Death (occurs at various ages, depending on person)Decomposition (breakdown of the physical body after death)
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