A magnetic field is created A. when a compass is placed next to a wire
B. when wire is twisted into a loop
C. when an electric current flows through a wire
D. when wire is wrapped around an iron core

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warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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it is stable as it is in group 0 which have full outer shells of electrons