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Do black men have extra muscles in their legs?

Although black athletes hold more world records for 100-meter dashes than any other race, LiveScience states that it has nothing to do with the color of their skin and is likely due to the longer length of their legs in relation to their torsos and their higher centers of gravity. Black men may have longer muscles in their legs, but not extra ones.

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What are some tips for repairing your high-beam headlight relay?

To test for a voltage drop, hook the positive lead for the voltmeter to the vehicle's positive battery terminal. Attach the negative lead to the positive terminal of the headlight in question. Record the voltage drop, and repeat on the other headlight. Add the two figures together to achieve the total voltage drop.\nWhen choosing where to run the relay's wires, consider either the alternator output terminal or the positive post of the battery. For older cars with full-current ammeters, the alternator is the best choice, as it would keep a large current load away from the wiring syste..

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How does a hydraulic arm work?

An example of a typical hydraulic system would be a three-way valve operated by a lever. In the central position, the valve is closed. In the forward position, the valve is open, allowing the fluid to flow and push against the bottom of the piston and forcing it to extend. In the rear position, the valve opens to allow the fluid to flow in the opposite direction, making the piston contract. Oil is generally used because of its lubricating and anticorrosive features, but water could be used as an alternative.

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What does the Bohr atomic model of lithium look like?

GreenPlanetSolarEnergy.com uses the analogy of an onion to describe Bohr models of atoms. The orbitals are like the layers of the onion that surround a solid core scientists call the nucleus. Only the outer layer of the onion turns brown as only the outer electron shells allow the atom to react. Each of these shells has the ability to contain a certain number of electrons. With lithium, the two electrons fill the inner shell, but the outer shell has room for an additional seven electrons for a total of eight.\nWith its almost empty outer shell, elemental lithium is highly reactive and does not..

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Where is the liver located in the human body?

The liver is the largest glandular organ in the human body. Its primary function is to rid the body of any harmful substances or toxins. It secretes bile, which is a substance required to digest fats in the body. The liver also plays a vital role in maintaining metabolism, detoxifying blood and breaking down hemoglobin. A human cannot survive without a healthy liver.

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What do omnivores eat?

A number of omnivores have adapted over time and possess traits of both herbivores and carnivores. This allows them to easily chew up plant matter and rip meat apart. A good example of an omnivore that has biologically adapted to its environment is the raccoon, which has sharp teeth and long fingers with quick paws that allow them to not only catch small prey, but also gather plants and fruit.

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How do algae reproduce?

There are both single-celled and multicellular types of algae. As HowStuffWorks points out, in some types of single-celled algae, asexual reproduction occurs, which causes all genetic information to come from a single-parent cell, which it shares with the newly formed daughter cell. Asexual reproduction occurs by means of fission, in which a cell divides into two more cells. In other types of single-celled algae, the method of reproduction is sexual.\nIn multi-cellular algae, reproduction is done in both ways. Generally, one generation of algae will reproduce asexually, and the next will repro..

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How does ethanol work?

Ethanol can be produced from many sources of starch, such as corn, wheat, potatoes and barley, and from sugar crops such as sugar cane and sweet sorghum. The most abundant crop in the US is corn, so most of the ethanol is produced from corn, making it a renewable, domestically sourced fuel. By using an ethanol blend in vehicles, the U.S. cuts down on its reliance on foreign oil and reduces greenhouse gases. It takes 56 pounds of corn to make 2.8 gallons of ethanol fuel. A by-product of ethanol is distiller grains, which can be fed to livestock. The grains are still good for the animals because..

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What is the process of glycolysis like?

There are 10 steps in the glycolysis reaction. These steps must take place in order to break a six-carbon glucose molecule down into two separate three-carbon pyruvate molecules. For this reaction to occur, two ATP molecules and several enzymes must be present.\nGlycolysis is carried out in the cytoplasm of cells and is a prerequisite for other biological processes. Depending on the environment around the cell, pyruvate molecules can be utilized in two different methods following the completion of glycolysis: oxidized and fermented.\nThe Krebs Cycle is initiated in the cell if oxygen is presen..

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What are the ingredients in gel ice packs?

Ice packs fall into two broad categories: those that have to be frozen in advance and those that become instantly cold when activated. People must freeze the water and cellulose and water and silica gel packs in advance of use, but they have a large heat capacity that keeps them cold for extended periods. They are most commonly used in coolers as a refrigerant for food and drinks.\nUnlike reusable gel packs, instant ice packs do not have to be refrigerated or frozen before use. Instant ice packs contain quantities of water and ammonium nitrate, which are kept separated by interior partitions. ..

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