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OpenStudy (baconfuntimes):
WILL FAN AND MEDAL Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink? A. a difference in substance B. a difference in weather C. a difference in climate D. a difference in density
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OpenStudy (misssmartiez):
D. http://www.answers.com/Q/Convection_currents_form_when_warm_air_rises_and_cold_air_sinks_What_causes_the_warm_air_to_rise_and_the_cold_air_to_sink http://www.answers.com/Q/&ad=1
OpenStudy (anonymous):
answe is d
OpenStudy (anonymous):
am 99 %sure
OpenStudy (anonymous):
d
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