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Balance the equation
Pb(NO3)2(aq) + K2CrO4(aq) PbCrO4(s) + KNO3(aq)
Circadian Rhythm
The natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.
Mates
Refers to individuals chosen as partners for reproduction or companionship, typically within the context of romantic or sexual relationships.
Evolutionary Psychologists
Scientists who study the psychological traits such as memory, perception, and language from a modern evolutionary perspective.
Birthday
The anniversary of the day on which a person was born, typically celebrated as a yearly event.
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