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What affects the speed of objects?

Weight and drag classify as vector quantities, and unlike mass, they can change. In the Earth's atmosphere, objects fall at different rates depending on their weight and the presence or absence of drag. Objects with higher weights, larger surface areas and high drag coefficients fall quicker than streamlined, lightweight objects.

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What is the difference between a zygote and an embryo?

A zygote is formed when a sperm and an egg combine into a single cell. The resulting cell then enters a phase of rapid division in which it quickly grows larger. The cells remain non-differentiated as long as they stay in this rapidly dividing zygote stage. Between the zygote and embryo stages is the blastocyst stage, which creates two layers of cells.\nThe central layer of cells becomes the embryo; this is when cells begin to differentiate. The cells begin to specialize and take on specific rules instead of all cells being the same, like they were in the previous stages. The organism remains ..

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What causes a molecule to be polar?

Molecules containing more than one type of atom consist of polar bonds. This is because different atoms have different electronegativities. Electronegativity of an atom is a measure of its tendency to attract a bonded pair of electrons in a covalent bond to itself. For example, when oxygen and hydrogen form a bond in a water molecule, the bonded electrons are more attracted to the oxygen atom because it has a higher electronegativity value, which makes the bond polar. However, in a chlorine molecule in which two chlorines are bonded together with a non-polar bond, the bonded pair of electrons ..

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What is compensation depth?

Compensation depth is the point at which the water completely dissolves calcium carbonate and leaches the mineral from seafloor sediments. The lysocline, as it is sometimes called, averages 4 to 5 kilometers deep in most areas, though it runs deeper where continental runoff causes turbulence and stirs up all but the deepest layers of the ocean. In places where little turbulence affects ocean layers, compensation depth is usually higher than average.\nThe acidity of deep water results from a build-up of CO2 released by deep-water species of animals. These animals extract oxygen from the surroun..

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What is alpha beta delta?

In organic molecules, the first carbon atom attached to a functional group is called an alpha carbon, whereas the second is called a beta carbon. Delta and sigma bonds are chemical bonds named so because of their shape. There are several other uses in math, chemistry and other sciences for these letters. For example, alpha, beta and delta radiation and particles exist as well.

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What is the state of beryllium at room temperature?

At one time, another name for beryllium was glucinum because it and its compounds have a sweet taste. Although sweet tasting, beryllium is toxic, and exposure to it can cause health problems.\nIn 1798, Abbe Hauy recognized similarities in the crystal structures of the minerals beryl and the gemstone emerald. In the same year, Louis-Nicholas Vauquelin discovered the presence of the element beryl in these two substances. However, in 1828, the chemists Friedrich Wohler and Antoine Bussy were independently able to isolate pure beryllium from beryllium chloride.\nThe nuclear industry uses beryllium..

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What is the cleanest animal on Earth?

While pigs in captivity have no choice but to excrete waste near their living spaces, wild pigs refuse to do so. They often wander far away from their den when nature calls. Unlike humans, pigs do not sweat. They wallow in mud to cool their body temperature, which gives them their dirty appearance.Pigs are also very smart and can be trained very much like a domestic pet. When properly trained, pigs can obey commands.

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What is the difference between renewable and sustainable energy?

According to Reference.com, in the broadest sense, sustainable energy stretches to include fossil fuels as a transitional source as long as energy providers develop new ways to meet future needs before such sources are no longer available. However, fossil fuels are not renewable due to their limited availability and their environmental impact. Even the narrower sense of sustainable energy includes nuclear energy as it is available for the time frame relevant to the human race. Nuclear energy is not renewable. Due to its environmental impact, political challenges and potential for use in terror..

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What are some facts about air pressure?

Additionally, at high altitudes, there is also a decrease in oxygen levels. For this reason, mountain climbers at high altitudes can require supplemental oxygen. Ascending too quickly can also cause people to become sick with an illness called decompression sickness. Conversely, air pressure increases as one moves from a higher to a lower elevation.Air pressure is the force exerted by air's weight on a particular surface. At sea level, the average atmospheric air pressure is given as 101.325 kPa, or 1 atmosphere is equal to 101.325 kPa. This is also equivalent to 101,325 pascals. One atmo..

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What is a hydrostatic skeleton?

Hydrostatic skeletons, also known as "hydroskeletons," are found in organisms with soft bodies, such as earthworms, spiders, jelly fish, sea anemones and star fish. When the organism dies, the pressure is no longer maintained and the body curls.The fluid's pressure and the surrounding muscles also work to provide movement in some creatures and permit other organisms to change the shape of their bodies.

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