<span>another name for divergent boundaries because seafloor spreading occurs here. ... long, narrow zone where one lithospheric plate descends beneath another.</span><span>
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Answer:
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
Explanation:
