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1. It is the portion of mantle where magma originates.
2. It is the name given to a group of minerals composed of silicon and oxygen, the two
most abundant elements in the earth's crust.
3. It refers to the resistance to flow.
4. It refers to the molten rock which is expelled out from the earth's interior.​

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Chay101505viz

Answer:

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1. Upper Mantle

2. Silicates

3. Viscosity

4. Lava

Explanation:

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Cloudypeachiviz

Answer:

1. lithosphere/ upper mantle

2. silicates

3.viscosity

4. lava