Physics
What is the full form of ''AM' regarding radio broadcasting?

Amplitude Movement
Amplitude Modulation
Amplitude Matching
Anywhere Movement

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Physics
Thermohaline circulation is mainly due to

Warm water being added to the ocean due to industial waste
Winds causing circulation of ocean water
Warmer, less dense water sinking in the ocean and cold water replacing it
Cold, dense ocean water sinking and warmer water replacing it

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