Which of the following statements? i. land and sea breezes are natural convection currents. ii. convection may occur in liquids or gasses but not in solids. iii. the vacuum in a thermos flask prevents heat loss due to convection only.
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A.
i and ii only -
B.
i and iii only -
C.
i and iii only -
D.
i, ii, and iii