Crucigrama Earth's Outer LayersVersión en línea Earth is made of layers. Since Earth is round, the layers all have the ending "-sphere" por Rosa Andica 1 All the water on Earth. 2 The thin layer of air, mostly nitrogen and oxygen, that surrounds the Earth. 3 The solid rock part of Earth, including mountains, valleys, continents, and all of the rock beneath the oceans. 4 All the living organisms on Earth. 4 2 1 3
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