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Nails grow faster in the summer because of increased vitamin exposure. Talk about quick thinking, information travels up to 350 miles per hour in the brain. All mammals get goosebumps. The muscles ...
Human is a loanword of Middle English from Old French humain, ultimately from Latin hūmānus, the adjectival form of homō ('man' – in the sense of humanity). [14] The native English term man can refer to the species generally (a synonym for humanity) as well as to human males. It may also refer to individuals of either sex. [15]
The largest swimming pool in the US was so large, lifeguards needed rowboats to patrol it. Fleishhaker Pool, built in San Francisco in 1924, measured 1,000 x 150 feet, contained 6.5 million ...
The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems . The external human body consists of a head , hair , neck , torso (which includes the thorax and abdomen ), genitals , arms , hands , legs , and feet .
Its these kinds of far-fetched facts about the human body that can deepen your gratitude for it at the same time though. The human body is just plain weird man. If we knew about all the (hopefully ...
Human growthand development. Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the ...
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period. It includes brief explanations of the various taxonomic ranks in ...
Human history. Human history is the record of humankind from prehistory to the present. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers. They migrated out of Africa during the Last Ice Age and had populated most of the Earth by the end of the Ice Age 12,000 years ago.