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The human life cycle begins at fertilization, then birth, and progresses through infancy, childhood, puberty, adulthood and aging, ending in death. Every stage is unique and encompasses changes in the human body. More »

www.reference.com Science Environmental Science Human Impact

There are six main stages of the human life cycle, during which a human is a fetus, baby, child, adolescent, adult and elderly person. The exact age for entering each stage varies, but all healthy humans follow the same ... More »

www.reference.com Science Biology

There are many different versions of the human stages of life, but most explanations include baby or infant, toddler, child, adolescent, adult, and mature adult. Each stage encompasses an age range. Some resources, such ... More »

www.reference.com Science Biology
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The different stages of human life are fetus, infancy, childhood, adolescence, adulthood and old age. The human life cycle starts at fertilization, goes through the embryonic stage and the fetal stage. After fetal growth... More »

www.reference.com World View Social Sciences Anthropology

Prader-Willi syndrome is a genetic condition that causes poor physical growth and feeding difficulties in infancy before progressing to insatiable hunger and obesity throughout childhood and adulthood, as Genetics Home R... More »

www.reference.com Health Conditions & Diseases

A life cycle includes the various stages in the life of a living thing, including its birth, growth, aging and death. For instance, a butterfly's life cycle chart starts with an egg, moves on to a caterpillar, then a coc... More »

www.reference.com Science Biology

The seven stages of life are infant, childhood, teenager, young adult, adulthood, retirement and the elderly stage. The origin of the seven stages of life came from an ancient Greek philosophical view. The belief is that... More »

www.reference.com World View Philosophy