The continental crust floats on top of the mantle because the crust is.

crust has greater buoyancy,

Explanation:

The effect of the different densities of lithospheric rock can be seen in the different average elevations of continental and oceanic crust. The less-dense continental crust has greater buoyancy, causing it to float much higher in the mantle.

Explanation:

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c. 2,000 bce

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the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.