Q. How many percent of gold is found in Africa?

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Q. How many percent of manganese is found in Africa?

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Q. Which is the rare mineral found in the rocks of earth's crust?

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Q. Which area are the old igneous rocks found?

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Q. Which are the most abundant minerals found the surface of earth?

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Q. A minerals is obtained by

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Q. The earth consists of three layers named as

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Q. The earth is surrounded by a layer of

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Q. The accumulation and compression of deposits of mud forms

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Q. Which rocks are associated with old plateau blocks and ancient shields?

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Q. Limestone change into which rock?

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Q. The crust is the most important layer for

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Q. Below the mountain the earth's crust is

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Q. Under the ocean the earth's crust is

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Q. Sedimentary rocks are considered as the

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Q. The earth's surface is partly covered by

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Q. Clay is changed into which rock?

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Q. The remains of plants and animals, masses of shells of sea on the sea bed forms

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Q. The mantle is formed of thick shell of

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Q. The thinnest layer of earth is

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