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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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The average adult has about 21 square feet of skin.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

Difficulties in applying the morphological species concept Difficulties in applying the morphological species concept
The three dimensions of stream structure. The three dimensions of stream structure.
Dimensions for gathering data Dimensions for gathering data
A taxonomy of the human species. A taxonomy of the human species.
Posterior view of muscles of the human body Posterior view of muscles of the human body
The regions of the human Y chromosome The regions of the human Y chromosome
Video: What is Reverse Osmosis?

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