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.
The best way to prevent a blister from forming is to reduce friction on the skin. Wearing the right shoes and socks and keeping the skin as dry as possible can help reduce friction. Another blister prevention strategy is to increase your time and intensity of activity slowly over time to allow a callus to form in areas of friction, rather than blisters. But even the best strategies can fail, and when they do, these blister prevention and treatment products can be a skin-saver.