Q1. The oldest rocks found in ocean basins are ____ than the oldest continental rocks.
Q2. The Plio-Pleistocene boundary lies about ____ years ago, at the beginning of the interval of warming after the last Pleistocene glaciations.
Q3. The periods of different eras are further divided into
Q5. The right ascension is the equivalent of longitude on the celestial sphere, and it is given in the units of
Q6. The number of a topographic map is 47A/16/NW. Its scale must be
Q8. The process of particle detach ment by moving glacial ice is called

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