Because of the need for water and other resources. Central Australia is mainly desert, and has a hot, dry climate.
Answer:
The greater the amount of silica in magma, the more viscous the magma is. The magma thus solidifies quicker as well.
Answer:
Egypt, as Herodotus wrote, is the Gift of the Nile. ... No Nile, no Egypt. It's that simple. But the Nile isn't Egypt's alone: its flow, and those of its tributaries, also waters the soils, and is fed by the rivers, of Sudan, Ethiopia, and several other African nations.
Explanation
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Answer: mantle and sillicates
Explanation: