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If the polar axis of Earth moves through a full circle in 26,000 years as a result of precession (see Figure 1-19c,Comins,Discovering the Essential Universe,6th ed.) ,how long will it take for the line between the center of the circle and the spin axis to move through 180° (i.e.,to the other side of the circle) ?
Organic Product(s)
Chemical compounds consisting of carbon that are produced as the outcomes of organic reactions.
Major
Often refers to the main or predominant component, phase, or aspect in a mixture, compound, or scenario.
Reaction
A reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
Complex Metal Hydrides
A class of compounds formed by the combination of a metal with hydrogen, typically used as hydrogen storage materials.
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