Kidney stones are stones caused by the precipitation of minerals, such as calcium, and other substances from the urine or kidney filtrate.
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What are Kidney stones?</h3>
These are hard deposits of minerals such as calcium etc which stick together in the urine of affected individuals.
This thereby causes pain when urine is being expelled from the body as a result of the large size.
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Explanation:
<u>Reducing sugars are simple sugars with the ability to reduce copper (II) ions to copper (I). All monosaccharides (fructose, glucose, galactose) are reducing sugars as are some disaccharides, such as lactose and maltose. Simple sugars are all carbohydrates, and are used by the body as a source of energy.</u>

Explanation:
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Answer:
Both physical and chemical weathering, along with erosion, can change Earth's surface as physical weathering allows breakdown of rock into smaller pieces, these pieces can be move from one place to another through water, wind or ice (erosion), and when the smaller pieces will settle down at a place, rain water can react with the soil or smaller rock pieces to form rock minerals.
For example: Running water, wind, and rapid heating/cooling allows the rocks to break down into smaller pieces or grains (physical weathering), then the small grains are transported and settled away from the source area through wind or river (erosion), and at the end the surface area exposed to air for chemical weathering.