Physics
The base of an electric iron is brightly polished mainly

To make it rust-proof
To reduce heat loss by radiation
To make it more durable
To make it smooth and frictionless

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Physics
Which statement best describes an igneous intrusion?

Magma is exported to an open area and forms iron
Magma explodes to the surface and forms a smooth outer layer of rock
Igneous intrusion for when ice crystals splash into lava
Magma is injected into surrounding rock forming an igneous intrusive

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