Study the following statements and select the correct answer from the codes given below The average ...........

World Geography (Easy) World Physical Aspects

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Study the following statements and select the correct answer from the codes given below:

The average density of rocks in the lower crust of the earth is 3.
There is a gradual decrease in the velocity of the seismic waves through the lower crust.
The mantle-core boundary is marked by Moho-discontinuity.

The outer core of the earth is in molten form.

1 and 2 are correct

2 and 3 are correct

3 and 4 are correct

1 and 4 are correct

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Explanation:

The crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle. The Earth’s crust is composed of distinctly different continental crust and oceanic crust, which have different chemical compositions and physical properties, and which were formed by different geological processes.

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