kiseonik

kiseonik

An element with atomic number 8; symbol: O. It is actually the most common element in the crusts and mantles of the inner planets and rocky moons, making up all silicate minerals. Along with hydrogen, carbon, and nitrogen, oxygen is essential to life.

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行业/领域：天文学
类别行星科学
Company: PSRD
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Džon Lenon

John Lennon, (9 October 1940 – 8 December 1980) was a celebrated and influential musician and singer-songwriter who rose to worldwide fame as one of ...