Well there are many words that can answer that. Is there a word box or hints towards the specific words? If not just say heavily.
Answer:
I'm not sure but I think it is convection.
Answer:
The correct answer is<em><u> D. Set</u></em>
Explanation:
In contrast, <em><u>direct current</u></em> (DC) refers to a system in which the movement of electric charge in only one direction (sometimes called unidirectional flow). Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator -type electric machines of the dynamo type.
