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Q:

Land is included in the circle –

  • 1
    upper crust only
  • 2
    upper and lower crust
  • 3
    upper and lower crust and solid upper part of mantle
  • 4
    none of these
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Answer : 3. "upper and lower crust and solid upper part of mantle"
Explanation :

The Earth's lithosphere consists of the crust and the uppermost solid mantle, which form the Earth's hard and rigid outer layer. It extends to a depth of about 100 km. The crust, as postulated by the plate tectonic theory, consists of many plates and solid blocks.

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