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These lines cross Angola. So, the answer is Angola.
The core has the largest density, being made of iron and nickel
The mantle has an intermediate density and the crust has the lowest density.
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About 71 percent<span> of the Earth's surface is water-covered, and the oceans hold about </span>96.5 percent<span>of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers</span>