Human: Difference between revisions
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Humans have a robust physiology. They are bipedal mammals and generally strong, fast and agile. They begin puberty at around 12 years old, transitioning from a child to an adult, and reach full physical maturity at around 25 years old with the brain completing development. Then they enter the workforce or continue their education for a profession. The maximum human lifespan is naturally about 120 years, but advanced biotechnology and cybernetics have substantially increased longevity. [[Progenitor Cells]] are used to restore damage in older human cells and greatly extend human life expectancy. | Humans have a robust physiology. They are bipedal mammals and generally strong, fast and agile. They begin puberty at around 12 years old, transitioning from a child to an adult, and reach full physical maturity at around 25 years old with the brain completing development. Then they enter the workforce or continue their education for a profession. The maximum human lifespan is naturally about 120 years, but advanced biotechnology and cybernetics have substantially increased longevity. [[Progenitor Cells]] are used to restore damage in older human cells and greatly extend human life expectancy. | ||
Humans are genetically diverse due to prolonged adaptation to different environments on earth, resulting in different ethnic phenotypes, such as lighter and darker complexions. Most humans typically have brown hair and brown eyes, but a small amount is born with recessive physical traits like blonde or ginger hair and/or blue or green eyes, due to adaptations to environments with less intensive sunlight. Since the late 20th century there has been increased mixing of different human ethnicities due to mass immigration between nations, which resulted in improved genetic pools and the aforementioned recessive physical traits becoming rarer initially but eventually | Humans are genetically diverse due to prolonged adaptation to different environments on earth, resulting in different ethnic phenotypes, such as lighter and darker complexions. Most humans typically have brown hair and brown eyes, but a small amount is born with recessive physical traits like blonde or ginger hair and/or blue or green eyes, due to adaptations to environments with less intensive sunlight. Since the late 20th century there has been increased mixing of different human ethnicities due to mass immigration between nations, which resulted in improved genetic pools and the aforementioned recessive physical traits becoming rarer initially, but eventually became more common again as recessive traits skip generations and continued diversification of genes. | ||
== Early History == | == Early History == | ||