It depends on the map. There should be a key indicated.
Usually determined by changes in the biota.
<span>. It is very rare to have precipitation in either the tundra or deserts. They both experience extreme temperatures. Also, limited and no plant life can survive there.</span>
Cold and hot air mixing to getther
The oceanic crust is that part of the Earth’s crust that covers the ocean basins while The continental crust accounts for 40% of the surface of the Earth.<span>
The first option.
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