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How do blizzards form?

Not every severe snowstorm is considered a blizzard, and in fact, a blizzard doesn't even need to involve much snow. The National Weather Service has a set of three criteria that must be met for a storm to be considered a blizzard. First, there needs to be blowing or falling snow that results in a reduction of visibility to less than one-quarter of a mile. Second, the storm needs to produce sustained winds or frequent wind gusts in excess of 35 mph, and finally, the previous two conditions need to continue for at least three hours.\nMany blizzards do not involve heavy or wet snow but inst..

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What does the nucleus do in a plant cell?

The nucleolus produces ribosomal RNA while chromatin is a combination of DNA, protein and RNA. Other organelles found in a plant cell outside the nucleus are the vacuole, Golgi apparatus, cytoplasm, mitochondria, smooth endoplasmic reticulum and free ribosomes. Unlike animal cells, plant cells contain chloroplasts, which are disc-shaped and contain chlorophyll, an important substance for photosynthesis.

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What is an urban heat island?

Urban surfaces and human activity are two main causes of urban heat islands. Urban surfaces are dark and absorb more sunlight. Human activity releases heat into the environment. Urban heat islands impair air quality and increase the amount of energy needed for air conditioning. Human health is impacted, as warmer temperature and reduced air quality can aggregate respiratory problems.

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How do you grow salt crystals?

Boil the waterHeat deionized water in a clean container until it boils. If the water isn't boiling, it cannot dissolve enough salt to form salt crystals. Add the saltAdd salt to the water, and stir the solution. Continue adding salt and stirring until crystals appear at the bottom of the container.Pour into a clean containerPour the solution into a separate clean container. Don't transfer undissolved salt to the new container.Add the seed crystalAttach a piece of nylon fishing line to a pencil, and then attach a seed crystal to the fishing line. Lay the pencil across the container so..

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What is the equation for lactic acid fermentation after glycolysis?

The fermentation process involves the transfer of a hydrogen atom from NADH to the pyruvate molecule, converting C=O bond into the C-O bond. The resulting molecule is, lactate, which further forms the lactic acid. Muscle fatigue is stimulated due to the formation of lactic acid, which normally is made after strenuous exercise, in the absence of oxygen. Presence of Oxygen, drives the utilization of NADH towards the electron transport chain.

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What is the function of the endodermis?

A plant's root is comprised of a number of layers, each with its own responsibility to promote the health of the plant. Overall, these layers work together to absorb water and nutrients, which are essential to keep the plant alive.\n\nThe endodermis offers protection from water saturation. Before water can penetrate the Casparian strip, it must first pass through the endodermis cells. From there, water can go through the Casparian strip, which allows the plant to absorb the water as needed.\n\nIn addition, the endodermis plays a role in helping the plant absorb nutrients. The structure of..

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How long is one day on Saturn?

Saturn is a massive gas giant that dwarfs planet Earth. Saturn is surrounded by seven large rings that are made up of ice and rock chunks, while the planet itself consists mainly of helium and hydrogen. The planet cannot support biological life and has only ever been observed through telescopes and visited by a number of unmanned spacecraft.

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What is a periodic wave?

Periodic waves are usually characterized by their amplitude, frequency and wavelength. The amplitude is the vertical distance between one of the wave’s troughs and the next crest. The wavelength of a periodic wave refers to the distance between sequential troughs or crests. The frequency of a wave is the number of troughs or crests that occur over time. The wavelength of a periodic wave is inversely proportional to its frequency.

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What are the disadvantages of whaling?

A major problem with whaling centers on the impact to whale populations. For example, gray whales have been extinct in the Atlantic for hundreds of years. It is also believed that there may be as few as 4 percent of the total population of blue whales that lived before exploitation began.\nFewer whales can also have an impact on the ecosystem. When a whale dies, its body sinks to the bottom of the ocean. On the ocean floor, a whale's body provides food to many different creatures that normally do not have access to such an abundant food supply.\nWhile many proponents of whaling claim that..

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How deep is the Laurentian Abyss?

The Laurentian Abyss has hydrothermal vents that produce an ecosystem that doesn't need sunlight for survival. The underwater depression was used in the plots of the movies "The Hunt for Red October," "Transformers" and "Transformers: Revenge of the Fallen." The latter two movies incorrectly stated that the abyss was 55,800 feet deep, which is approximately 10.6 miles.

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