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What are the differences between different types of clouds?

Cirrus clouds are found higher up in the atmosphere than other clouds. They are made of ice and tend to be white, curly or wispy.\nStratus clouds are found only a few hundred feet above the Earth. They are thin clouds that are most often seen in the early morning or the late evening, when the air is calm.\nCumulus clouds are fluffy clouds that are seen floating in the sky on bright days. They increase in size and number during the middle of the day, when the air warms. A large number of cumulus clouds often presage rain. In the evening, when the air cools, cumulus clouds tend to give way to st..

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What is potassium gluconate?

Adequate potassium levels are necessary for the proper functioning of the kidneys and the heart, as well as nerves and muscles. Certain medical conditions can cause blood potassium levels to become depleted, including serious or prolonged diarrhea or vomiting and hyperaldosteronism, which is the overproduction of a steroid hormone in the adrenal glands. Symptoms of low potassium include muscle cramps, irregular heartbeat, fatigue and constipation.

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What determines the color of light?

The human eye contains cells, called cones, which are filled with one of three kinds of photopigments that selectively absorb only certain wavelengths of light. One is specialized for picking up short wavelengths, another for medium wavelengths and the third for long wavelengths. There is some overlap between the pigments' ranges, but none are able to see the full range of visible light on their own. When one of the pigments is not present or does not work properly, color blindness is the result.\nIn eyes with normal color vision, light that has a wavelength between 377 and 455 nanometers..

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How many mL are in 1 cc?

The milliliter is a unit of volume in the metric system. It is equal to one-thousandth of a liter or about .034 fluid ounces. The cubic centimeter is also a unit of volume in the metric system. It corresponds to the volume of a cube that measures 1 centimeter by 1 centimeter by 1 centimeter.\nAlthough the milliliter has replaced the use of cubic centimeters in several industries, the medical and automotive sectors still use cubic centimeters, particularly in the United States. In the medical field, for instance, cubic centimeters are used to measure doses of injectable medications.

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What is the definition of "water-holding capacity"?

The water that remains in the soil after draining is held by a force greater than gravity. The water level in the soil that can no longer be absorbed by the plants is referred as the permanent wilting point, and this water is strongly attached to the soil particles. The available water to the plant is considered to be 50 percent of the soil's water-holding capacity. The water level that is held by the soil between saturation and field capacity is referred as gravitational water.

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What is ethane's boiling point?

When the vapor pressure drops below the atmospheric pressure, the substance changes its state of matter from a liquid to a gas. The kinetic energy of particles relates to the vapor pressure in a substance and is higher in a gas than in a liquid. Standard temperature and pressure conditions assume a temperature equal to 68 degrees Fahrenheit and that the pressure is one standard atmosphere unit.

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What is a voltmeter used for?

There are two basic types of voltmeters: analog and digital, with digital being the more accurate of the two. An analog voltmeter is built with a galvanometer in series with a high resistance and the inter resistance of the voltmeter must be high. A digital voltmeter shows the voltage as numbers.Voltmeters are used in a variety of different industries. They are common in laboratories and the automotive industry, and home electricians use them every day.

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What are examples of endoskeleton animals?

Many mammals and fish also have endoskeletons. Internal skeletons support life in essential ways for many organisms. In addition to providing structure and stability, these skeletons grow along with the living creatures. Unlike organisms with external skeletons, animals with endoskeletons never shed their skeletons when passing through various life stages. Their skeletons remain intact inside their bodies, creating critical frames around vital organs and keeping those organs in place.Skeletons also serve as attachments for ligaments and tendons, which affix to the outside layers. Internal skel..

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Why is petroleum important?

The source of oil and gas are animals and plants that died millions of years ago, the World Petroleum Council explains. These organisms sunk to the bottom of the sea and were buried by sand and mud. After millions of years, the dead sea creatures became buried deeper and deeper and turned into oil and gas. The extreme pressure and temperature deep underground transformed the chemicals from the decaying organisms into crude oil and gas.\nThe International Energy Agency estimates that oil will supply 30 percent of the world's energy mix in 2030, reports NRC. Around two-thirds of oil in the ..

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What is a list of simple machines?

Machines are devices that make it easier to do work. Lifting, pulling, carrying and dividing objects requires the expenditure of energy, and simple machines direct that energy in efficient ways to accomplish tasks with minimal force applied. A wheel and axle, for example, rolls smoothly over terrain without losing undue energy to friction, as would a sledge. Levers and pulleys redirect force in such a way as to make lifting and pulling far more efficient than a brute-force application of energy. A wedge, such as an ax head, concentrates a driving force on a very thin edge that allows it to dri..

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