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How does the atmosphere protect life on earth?

The atmosphere consists of five layers and is approximately 60 miles thick. The layer closest to the surface is called the troposphere, and it provides the majority of the planet’s oxygen. This layer is also responsible for weather, including rain, which protects Earth's inhabitants from drought and starvation. Above the troposphere is the stratosphere. This contains the ozone layer, which absorbs harmful radiation. The stratosphere has very stable weather, which makes it safe and ideal for aircraft.\nThe middle layer is 20 miles thick and is known as the mesosphere. This layer is where..

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How many days does it take for Mercury to orbit the sun?

Mercury orbits at a speed of about 30 miles a second, traveling a total of 36 million miles as it races around the sun. Mercury's orbit is also highly eccentric; at perihelion (or its closest approach to the sun), Mercury is at 29 million miles, but a aphelion (or farthest distance from the sun) it is at about 40 million miles. As it orbits the sun, Mercury only rotates about three times in 2 of its years, making for a very long day.

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What is the function of long bones?

Long bones are designed to provide maximum efficiency for muscle functions such as lifting and rapid movement by serving as levers in the limbs. The bones typically consist of a long shaft called the diaphysis, and two wider extremities on the ends called epiphyses. The bone contains a central medullary cavity that serves as the center for bone marrow production. While the name suggests a larger size of bone, bones such as the metacarpals in the fingers are classified as long bones.

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What is the temperature of a bonfire?

A bonfire becomes hotter over time, based on how much material is burnt and released as a gas. In the initial stages, fire heats wood to 212 degrees F, releasing the water within the wood as steam. When the wood dries, it releases gases, raising the temperature to 1,099 degrees F. When all of the gas is released, the wood turns to ash. Charcoal added to the mix burns carbon as well, resulting in temperatures up to 2,012 degrees F.

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How do you test a single-phase motor?

It is wise to take precautions such as wearing safety gear to protect yourself from the electric shocks. After removing the motor wire’s cover, unscrew two or four screws using a slotted screwdriver. Check to see if there are two wire leads connected to a power supply of the device, and check the voltage range of the motor. In order to test the motor effectively, you must disconnect the two wires. Use a volt-ohm tester to test the two lead wires. A reading of 0 ohms means the motor is in a good condition. If there are normal readings, test the capacitor. You must test the capacitor because s..

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What are some examples of natural laws?

The First Law of Thermodynamics states that energy cannot be created or destroyed, but rather can be transformed from one form to another. The amount of energy in the universe remains stagnant, and simply changes into different forms based on certain reactions and occurrences.The Second Law of Thermodynamics refers to the law of entropy, which states that the potential energy of an object during a given state will always be less than the amount of energy the object during the initial state, as long as no energy is introduced or removed from the object.Newton's First Law of Motion states t..

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How do you change Dodge aftermarket headlights?

Masking the bumper prevents scratches when removing and then later reinstalling the grille. Pull up the bonnet and remove the locking bolts. Remove the center pins by unscrewing counterclockwise, prying them up and then pulling them out using the needle nose pliers. Unfasten the two screws to the radiator support on either side.\nPull the grille at the sides very gently to release the fasteners at the fenders. Remove the side marker lamp and the headlamp and place aside. Remove the turn lamp connectors. Once the top is released, pull the grille outwards. It will release the bottom fasteners. ..

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What does the lumbar vertebrae look like?

Also, the lumbar vertebrae protect the spinal nerves, though the spinal cord does not pass through the lumbar spine, according to Spine-Health. Instead, the spine branches into nerves called the cauda equina. This part of the spine also gently curves inward.\nThe lumbar vertebra is made up of a vertebral body and a number of projections called processes, according to Innerbody. One is the spinous process, which is above the vertebral body and separated from it by a space called the vertebral foramen. This space allows the spinal nerves to pass.\nLumbar vertebrae are also different from the oth..

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How many bones are found in the shoulder girdle?

The shoulder girdle is the entire joint system that allows the upper arm to move in a wide range of motion around the body. The shoulder joint is not a single joint like the elbow or knee, but instead is a complex system of bones, muscles, tendons and ligaments that create the widest range of motion of any joint in the human body. Without the shoulder girdle, humans would be unable to reach their arms above their head or out in front of them to perform simple tasks with their hands.The clavicle is commonly known as the collar bone. This bone helps keep the shoulder over to the side of the body..

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What months are winter in Spain?

The summer months of June, July and August are warm, However, August can be the driest and warmest month of the summer. The most precipitation can occur during the month of November.In other cities of Spain like Barcelona and Malaga, the minimum and maximum temperatures during winter can also range from the low single digits to the low teens. For example, in Barcelona during December the minimum and maximum temperatures can range between 41 and 57 F.

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