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.
Dry skin, usually the culprit behind cracked heels, commonly appears on such areas of the feet as the soles and heels. Shop Now. Causes: The best way to treat and also prevent dry, cracked skin on your feet is to use good therapeutic ointments and creams.Avoid using lotions, as these often contain alcohol, which actually dries the skin out more. Dry skin can result from a variety of reasons: 1  Age.2  Improperly fitting shoes. 3  Athlete's foot.4  Psoriasis.he best way to treat and also prevent dry, cracked skin on your feet is to use good therapeutic ointments and creams. Avoid using lotions, as these often contain alcohol, which actually dries the skin out more. Dry skin can result from a variety of reasons: 1  Age. 2  Improperly fitting shoes.