Demand for resources by the administrative and military complex
Answer:
The core is made of two layers – the inner and outer core. ...
The mantle is about 1,800 miles (2,900 kilometers) thick and makes up about 85% of the Earth's weight.
The crust is an outer solid layer and is where life as we know it exists with mountains, sea and soil.
The Earth is mostly made of rock and metal. As scientists can’t really get right to the middle of the earth, it’s not easy for them to know what’s way down in the middle.
Explanation:
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