Physics
Which statement best describes an igneous intrusion?

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

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Physics
It is dangerous to observe Solar eclipse with naked eyes because

Cosmic rays reach eyes more during the eclipse
Infrared radiations from sun burn our retina
Ultraviolet radiations from Sun burn our retina
All radiations from sun initiate chemical reactions in eyes

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