Of or pertaining to nebulae; of the nature of, or resembling, a nebula. Nebular hypothesis, an hypothesis to explain the process of formation of the stars and planets, presented in various forms by Kant, herschel, Laplace, and others. As formed by Laplace, it supposed the matter of the solar system to have existed originally in the form of a vast, diffused, revolving nebula, which, gradually cooling and contracting, threw off, in obedience to mechanical and physical laws, succesive rings of matter, from which subsequently, by the same laws, were produced the several planets, satellites, and other bodies of the system. The phrase may indicate any hypothesis according to which the stars or the bodies of the solar system have been evolved from a widely diffused nebulous form of matter.
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Well, I had to dig out my Geology 101 book for this. According to the Nebular Hypothesis. The earth consisted of water, carbon dioxide, ammonia, and methane. So my guess would be D. B was close, but no CO2 ws listed. Ref- Tarbuck, Lutgens, An Intro to Physical ...
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