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dlinn [17]
3 years ago
8

Carole owns a two story house with a heating and cooling unit on each floor. in the winter she mostly uses the downstairs unit b

ecause the volume of warm air __________ and __________ warming the whole house through __________.
Physics
1 answer:
Agata [3.3K]3 years ago
7 0
Expands, rises, covection
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