Answer:
It was the first discovery of a major change in the Earth's structure as one goes deeper. The crust is the outermost layer of the Earth. It is made of solid rocks. It is mostly made of the lighter elements, silicon, oxygen, aluminium.
Puerto rico hispaniola, cuba
Continents and islands are examples of large landforms called LANDMASSES.<span>
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Longitude lines run east-west.
Answer:
Arctic and Sahara
Explanation:
The climate is not very suitable for humans