Basal sliding phenomenon helps glaciers move down the valleys of the southern Alps. Basal sliding is the action of the glacier moving down across the bed because of the melting of water below the ice moving as the lubricant.
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I believe the answer you're looking for is C: Melting.
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Physical properties of a substance are characteristics that can be observed without altering the identity of the substance. Color, odor, density, melting temperature, boiling temperature, and solubility are examples of physical properties. Physical properties can be used to identify a pure substance.
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<span>Geographers use many tools and methods to study and understand the places of the world. By investigating the relationships among human activity the earth's physical systems and the environment the study of geography can contribute to a better future for the people of the world.</span>
The elements that make up the earth are the main reason for life on earth. The elements include water as a component of life support; an atmosphere with a composition suitable for life; and the distance between the sun and the earth is neither too close nor too far away and also on earth has oxygen and gravity.
