Question

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

Answer 1

D.

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Answer 2

answe is d

Answer 3

am 99 %sure

Answer 4

d