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How much force can a person exert?

Five thousand newtons of force is more than the force exerted down upon the Earth's surface by a half-ton. Most people do not generate nearly that much force. According to the Canadian Centre for Occupational Health and Safety, a worker supporting his or her body against a firm structure can develop horizontal pushing or pulling forces of up to 675 newtons,

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What is the role of ATP and NADPH2 in the Calvin cycle?

The Calvin cycle is a three phase process in which carbon dioxide is converted into sugar that can be used as energy. The three phases in this cycle are carbon fixation, reduction and regeneration. During reduction, ATP and NADPH2 convert the 3-phosphoglycerate from phase one into glyceraldehyde 3-phosphate (G3P), which is then converted into glucose and other sugars during phase three. For every G3P that is synthesized, the Calvin cycle uses six molecules of NADPH2 and nine molecules of ATP.

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What did the baby porcupine say when it backed into a cactus?

Porcupines have soft hair all over their bodies, but the sharp quills are more noticeable. Contrary to a popular myth, porcupines do not shoot their quills at predators. The quills just easily detach once they prick another unfortunate animal.\nThere are about two dozen species of porcupines, and their average lifespan is between five and seven years. These animals are herbivores, and their bodies can grow from 25 to 36 inches and weigh from 12 to as much as 35 pounds. Baby porcupines have soft quills at birth, but these become sharp and hard within a matter of days.

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What does raw copper look like?

Copper is a chemical element that has an atomic symbol of Cu and an atomic number of 29. It has an atomic mass of 63.5 grams/mole and is classified as a transition metal. Copper is an essential metal to all living organisms on Earth. It is known as a trace dietary mineral for humans. The transition metal is also used heavily in industry due to its ability to conduct both heat and electricity.

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Is the bladder supposed to empty completely?

According to WebMD, when you are unable to empty your bladder completely, it can lead to overflow incontinence, when urine leaks out of the bladder. Bacteria can also grow in urine that is left in the bladder, leading to problems such as urinary tract infections. Some causes of incomplete emptying of the bladder include blockages of the urethra, weak bladder muscles, medications and injury of the nerves around the bladder.

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What is capillary density?

Capillaries are the smallest blood vessels in the body, smaller even than veins and arteries, and they serve an essential function in transporting blood further than larger blood vessels can go. When capillary density is measured, a scientist or doctor will look at a cross-sectional area of muscle and count the number of capillaries present. Because capillaries are important in transporting oxygen throughout the body, a low capillary density can lead to an inability to exercise, though studies published by the National Institutes of Health indicate that capillary density is not necessarily an ..

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Why is the moon yellow?

To see the true color of the Moon, it has to be viewed from space. This is the only way to view the moon without the atmosphere of the Earth causing it to look different colors. Pictures that are taken from outer space show the moon as gray. This is due to the elements out of which the surface of the moon is made. According to NASA, the surface of the moon is mostly made of iron, magnesium, oxygen, aluminum, silicon and calcium.\nThe rocks on the moon also differ in coloring depending on the elements from which they are made. Most of the darker rocks on the moon are pyroxene, while the lighter..

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Are teeth considered bones?

Teeth are made from phosphorous, calcium and other minerals, explains LiveScience. While bones contain calcium, sodium, phosphorous and other minerals, their primary constituent is collagen.\nBones produce red and white blood cells through marrow, while teeth do not. Teeth contain dental pulp. It resembles marrow in appearance, but it contains nerves, arteries and veins.\nBroken teeth are unable to heal themselves and require physical repair, root canal or extraction. Broken bones are capable of regeneration and repair.

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What are the three types of plate movement?

The scientific theory that explains the movement of the plates of the Earth's crust is the theory of plate tectonics. This theory was developed in the 1960s. It describes the movement, as well as the cause of earthquakes, volcanoes, trenches in the ocean and mountain ranges. These geographical activities occur where the tectonic plates have contact.

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What is lithic sandstone?

The formation of lithic sandstone begins with the creation of basins by tectonic forces. Next, rocks and soil from the area surrounding the basin are typically shed through erosion and transported into the basin. After the debris is deposited, it settles into the basin where it may form sandstone. Quartz makes up to two thirds of the minerals in lithic sandstone.

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