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Which of the following statements is true? Oceanic crust is thicker than continental crust. Both oceanic and continental crust is made of granite. According to continental drift, the continents were once connected. The crust is thickest layer of the Earth.

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warriorpassionx
The third one. "According to continental drift (theory), the continents were once connected."

The statement 'According to continental drift, the continents were once connected'  is true.

So, option  3 is correct one

The thickness of oceanic crust is 5 Km and continental crust is 30 km. Therefore option A is incorrect.

The continental crust is made up of granite and ocean crust is made of lava rock called basalt. Therefore, option B is incorrect.

The crust is thinnest layer of the earth. Therefore, option D is false.

What is the oceanic crust?

  • The outermost layer of the oceanic portion of the divergent plate boundaries.
  • It is made of different types of basalts.
  • It is thin and dense.

What is continental crust?

  • The thick part of the earth crust which acquires large masses on the land.
  • It is also the layer of igneous, sedimentary and metamorphic rocks.
  • Its thickness is about 25 to 70 km

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