You gain health benefits from exercising for a minimum of
a. 10 minutes three times a weekb. 10 minutes two times a weekc. 20 minutes three times a weekd. 20 minutes two times a week

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the labor movement in the united states grew out of the need to protect the common interest of workers

for those in the industrial sector organized labor unions fought for better wages reasonable hours and safer working conditions

  in the 19th century trade unionism was mainly a movement of skilled workers.

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