The reason the three way classification of Igneous, Sedimentary and Metamorphic is used is because the processes involved in forming the three rock types usually results in a characteristic relationship between the mineral grains that is diagnostic. Sedimentary rocks form from sediments deposited from water or air.he reason the three way classification of Igneous, Sedimentary and Metamorphic is used is because the processes involved in forming the three rock types usually results in a characteristic relationship between the mineral grains that is diagnostic. Sedimentary rocks form from sediments deposited from water or air.
1 To prevent blisters caused by rubbing (friction blisters): 2  Avoid wearing shoes that are too tight or that rub your feet.3  Roomy footwear has a wide toe box with more room for your toes and the ball of your foot. 4  You should be able to wiggle your toes in your shoes.ome of the most common types of blisters can be prevented. 1  To prevent blisters caused by rubbing (friction blisters): 2  Avoid wearing shoes that are too tight or that rub your feet.
PREVENT BLISTERS BEFORE THEY HAPPEN: 1  Tailor the shoe to your foot. 2  Most of us wait until we get a blister to do something about it. 3  Cleary recommends padding a new shoe before wearing them outside.  4 When you first buy the heels, bring them home, put them on, and walk around your house in them for at least an hour.REVENT BLISTERS BEFORE THEY HAPPEN: 1  Tailor the shoe to your foot. 2  Pad the inside of your shoes where you felt the most irritation. 3  Pad the heel. 4  Mold them to your foot. 5  Lubricate. 6  Buy shoes at the end of the day. 7  Get off the sales floor.