Physics
Isotopes of an element contain

the same number of protons but different number of neutrons
the same number of neutrons but different number of protons
equal number of nucleons
equal number of protons and electrons

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Physics
Which statement best describes an igneous intrusion?

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

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