Answer:
Pedometers can be used to measure the estimated distance with how many steps you've made or walked/ran. People with a high risk of type 2 diabetes can use a pedometer if they're willing to because many doctors encourage them to exercise more.
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Trench Warfare was a form of military conflict in which opposing sides fought one another from trenches facing one another. WW1 warfare introduced the first large-scale use of chemical weapons as well as bringing in airplanes and tanks for the first time.