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Why is the Mississippi River important?

The Mississippi River provides hydroelectric power to a number of different cities. The river is the second longest in the United States and has 25 locks and dams. The river also drains off floodwater, which prevents many regions throughout the United States from flooding. In fact, there are 31 states and 2 Canadian provinces that drain water into the Mississippi. This includes thousands of rivers and streams, which make up its system of drainage. Transportation barges throughout the Midwest can ship to and from ports accessible through the Gulf of Mexico, making it important to trade and tran..

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Where did the measurement foot come from?

Most modern systems of measurement are based on the cubit, which is the length of the forearm from the tip of the middle finger to the point of the elbow, a unit of measure developed in the Indus Valley and dating back to ancient Egypt. Cubits were divided into units called palms and fingers which eventually became modern feet and inches. Probably the cubit spread when trading partners adopted it as a standard unit of measure.\nThe Greeks and Romans inherited the foot from Egypt, with a length of 11 1/42 inches believed to represent the length of an adult man’s foot. While the Greeks divided..

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What causes landslides?

Natural causes of landslides include earthquakes, volcanic eruptions, the undercutting of cliffs and banks by water erosion due to tidal waves, and the elevation of pore water pressure by prolonged rainfall and seepage. All of these natural causes are influencing factors of landslides. Together, they can create a small or large landslide that affects the geology and geography of an area.\nThe human causes of landslides include removal of vegetation, interference with the natural drainage of the land, leaking water or sewage pipes, overloading slopes, mining and quarrying activities, vibrations..

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How many kilograms are in a gram?

The weight of one kilogram, or 1,000 grams, is equal to approximately 2.2 pounds. This means that one gram is equal to 0.0022 pounds.\nThe basic unit of mass for the International System of Units is the kilogram. The expression of weight, however, can be scaled through the various metric prefixes. Thus, an object that weighs one gram is not reasonably expressed as 0.001 kilograms. Additionally, an object that weighs a tenth of a gram can be more easily expressed as one decigram.

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What muscle allows you to shrug your shoulders or extend your head?

The trapezius is responsible for several dynamic movements. Inner Body states that the trapezius muscles support the shoulders when carrying weight, help the head extend backwards and help the head rotate from left to right. The trapezius muscles bring the shoulder blades together as well. The superior fibers, middle fibers and inferior fibers control these motions.

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What is the difference between adhesion and cohesion?

The forces of adhesion can be the result of mechanical or electrostatic forces exerted on two different substances. Meanwhile, cohesive forces are generally associated with hydrogen bonding and Van der Waals forces, which cause liquids, particularly water, to withstand separation. When water is poured over a glass surface, both adhesive and cohesive forces act on the water. A stronger adhesive force tends to spread the liquid over the surface, while a stronger cohesive force tends to form water droplets on the surface.

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What is an example of a basic anhydride?

When these metal oxides come into contact with water, they react to form their corresponding hydroxide. For instance, the anhydride calcium oxide forms calcium hydroxide. All of the basic anhydrides, which have a very high charge and small size, can be produced by removing the water from their corresponding hydroxide at high temperatures.

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How does pressure affect solubility?

In an equilibrium state, solubility pertains to the quantitative measurement of the maximum amount of solute that can be dissolved in a particular amount of solvent. The term "solute" refers to the particle or substance that is dissolved, while "solvent" refers to the component that does the dissolving. The solubility of a material is its concentration in a solution that cannot further dissolve an additional amount of solute.Several factors affect solubility, including solute and solvent interactions, common -ion effect, pressure and temperature. Pressure does not significantly influence the s..

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How does hail form?

Most hail is relatively small, measuring fewer than 2 inches in diameter. However, even small hail is capable of causing a great deal of damage, owing in large part to the fact that it falls as fast as 90 miles per hour. According to the National Oceanic and Atmospheric Administration, a hail storm that occurred on April 10 in 2001 in Kansas City caused roughly $2 billion in damage.\nThe largest hailstone ever recorded fell in June 2003 in Aurora, Neb. The piece of hail measured more than 18 inches in circumference, 7 inches in diameter and weighed slightly less than 1 pound. The heaviest piec..

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What is the optimum temperature for catalase?

Many human cells produce hydrogen peroxide as a byproduct. Being toxic, hydrogen peroxide can cause harm to cells, resulting in their death. Catalase is not affected in any way during the decomposition of hydrogen peroxide. Found in the human liver, catalase works best in a neutral pH environment.\nBefore the production of cheese in food manufacturing, the hydrogen peroxide in milk is removed by using catalase. To ensure fabrics are free from hydrogen peroxide, catalase is used in textile manufacturing.

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