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is the ability or capacity to do work not just electrical but also physically moving or functioning

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communication tech is giving or exchanging information with others like getting in contact in anyway through internet with other people

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uses tools to treat disease like medication for a sickness,pains or eyesight and i think its most needed

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Allows us to send signals around the world like on television  people use commercials for advertisements and gives information to people who watches

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transportation tech is highly need because if there is no transportation we cant get to one place to another or import or export goods to in and out countis