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What mineral is the hardest?
As it says in Mohs scale, the diamond is always at the most top of the scale, being the hardest mineral. There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and for last and the hardest, diamond.
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Where are bees not found?
They are found on every continent except Antarctica, in every habitat on the planet that contains insect-pollinated flowering plants. Bees are adapted for feeding on nectar and pollen, the former primarily as an energy source and the latter primarily for protein and other nutrients.
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How long does it take for your body to digest a piece of gum?
You might have heard that swallowed gum stays in your stomach for 7 years. That's not true. Though your stomach can't break down a piece of gum the same way it breaks down other food, your digestive system can move it along through normal intestinal activity.
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What connects the Pacific Ocean and the Atlantic Ocean?
The Panama Canal is not the only water line connecting the Atlantic and Pacific Oceans. There's a place in Wyoming—deep in the Teton Wilderness Area of the Bridger-Teton National Forest—in which a creek splits in two. Like the canal, this creek connects the two oceans dividing North America in two parts.
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How long does a migraine usually last?
Migraines are disabling headaches that most likely stem from problems with the nerves and blood vessels in the head. Migraine headaches typically last from 4-72 hours. They may occur as often as several times a week to only once a year. People who have migraines are called migraineurs.
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When did Greenwich mean time start?
Greenwich Mean Time (GMT) was adopted as the world's time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.
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Which animal has the best sense of smell?
An elephant's trunk is not only long, it is packed with five times more smell receptors than humans. And now research has found that the African elephants have the greatest sense of smell among mammals - even beating dogs including the bloodhound renowned for its sniffing ability.
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What is motion sickness ?
Motion sickness is a very common disturbance of the inner ear that is caused by repeated motion such as from the swell of the sea, the movement of a car, the motion of a plane in turbulent air, etc. Some people experience nausea and even vomiting when riding in an airplane, automobile, or amusement park ride.
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What is hyperloop ?
Hyperloop is a high-speed transportation system, incorporating reduced-pressure tubes in which pressurized capsules ride on an air cushion that is driven by a combination of linear induction motors and air compressors.
It is an entirely new mode of transportation that eliminates all travel complications and objections due to cost, travel time and weather conditions.
Traveling as fast as the speed of sound, the Hyperloop will be faster than today's conventional methods of transportation. At about 760 MPH.
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What body parts of human body can be donated after death?
The entire body can be donated for training or research purposes. For the purpose of transplantation, the following can be harvested:
Liver ,Kidneys, Pancreas, Heart, Lungs, Eyes, Skin, Bone, Hands, Face .
As our techniques improve, more organs could be brought in to the fold and possibly also stored longer.
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What is difference between Copy Right and Patent ?
The Difference Between Copyright and Patent. Patents refer to an invention, whereas copyrights refer to the expression of an idea, such as an artistic work. They are governed by different rules, so it is important to know which is applicable to your works.
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Why ants follow each other ?
It turns out that when ants find food, they secrete an invisible chemical called "trail pheromone" as they return to the next. This trail leads directly from the nest to the food source.
Otherworker ants then follow the trail right to the food . Each worker then reinforces the trail on the way back.
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What is Google Glass ?
Google Glass is an optical head-mounted display designed in the shape of a pair of eyeglasses. Google Glass displayed information in a smartphone-like hands-free format. Wearers communicated with the Internet via natural language voice commands.
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How does star blow up ?
A hot bright star blows up when it runs out of fuel.
Here's why that happens. The force of gravity is always puling the matter in the star toward the center. But in that center, small bits of matter called atoms are always fusing together, making bigger atoms and releasing huge amounts of energy. That energy pushes outward and works against the gravity during the star's life. After many millions of years, the star runs out of small atoms. Then it has no more energy to push outward. The star collapses, and when the matter collides in the center, it explodes.
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Why is the keyboard keys not in alphabetical order?
The reason dates back to the time of manual typewriters. When first invented , they had keys arranged in an alphabetical order, but people typed so fast that the mechanical character arms got tangled up. So the keys were randomly positioned to actually slow down typing and prevent key jams.
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When was the wireless phone invented?
A jazz musician named Teri Pall invented a version of the cordless phone in 1965 but could not market her invention, as its 2-mile (3.2 km) range caused its radio signals to interfere with aircraft communications. In 1968, she sold her rights to the cordless phone to a manufacturer who modified it for practical use.
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Why do lakes freeze from the top down rather than the bottom up?
The reason why ice forms on the top of lakes and ponds is that once water cools below 39 degrees Fahrenheit, it becomes lighter and less dense the more it cools. This means that water expands as it freezes into ice. As a result, ice takes up more room than the water it was made from.
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What percent of calories does the brain use?
While a brain takes up about twenty percent, or 300, of a resting body's 1300 calories a day, and while it has the potential to burn more, it's estimated that most actual thinking only changes the amount of calories that the brain burns by around twenty to fifty calories per day.
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What country does the Sahara Desert cover?
Oases support some life forms in extremely arid deserts. The Sahara covers large parts of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia, extends over 9,000,000 km² (over 3,475,000 sq mi) and it covers about 1/4 of the African continent
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How long is Milky Way?
The disk of the Milky Way galaxy is about 100,000 light years in diameter (one light year is about 9.5 x 1015 meters), but only about 1000 light years thick. Our Galaxy contains about 200 billion stars.
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What animal is called a kid?
Male goats, called bucks or billys, usually have a beard. Females are called does or nannys, and immature goats are called kids. Wild goats include the ibex and markhor.
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What is deepest part of ocean ?
The Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United States Center for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters.
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What planet rotate clockwise in our solar system ?
Venus and possibly Uranus are the exceptions to the counterclockwise rotations of the planets . Venus travels around the sun once every 225 Earth days but it rotates clockwise once every 243 days. This pecular combination gives it a day with respect to the sun of 117 Earth days.
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Which is the only country crossed by both the equator and the Tropic of Capricorn?
The Tropic of Capricorn lies at 23.5° South of the equator and runs through Australia, Chile, southern Brazil (Brazil is the only country that passes through both the equator and a tropic), and northern South Africa.
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Why do surgeons wear green or blue clothes ?
Green and blue are colors that are not bright and pleasing to eye. Also they appear clean when stained with blood.
It began with wearing white scrubs as it was considered a surgeon is more reputed if his scrubs were stained more. Later as concepts of sepsis and hygiene came along colors changed to green n blue which are neutral to eye and also instil a sense of cleanliness and authority.
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What the Olympic Gold medal actually made of ?
The last series of Olympic medals to be made of solid gold were awarded at the 1912 OlympicGames in Stockholm, Sweden. Olympic Gold medals are required to be made from at least 92.5% silver, and must contain a minimum of 6 grams of gold. All Olympic medals must be at least 60mm in diameter and 3mm thick.
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What is the book that the Statue of Liberty is holding?
The statue is of a robed female figure representing Libertas, the Roman goddess of freedom, who bears a torch and a tabula ansata (a tablet evoking the law) upon which is inscribed the date of the American Declaration of Independence, July 4, 1776.
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Who invented traffic lights and where were the first ones situated?
THE FIRST traffic signal was invented by J P Knight, a railway signalling engineer. It was installed outside the Houses of Parliament in 1868 and looked like any railway signal of the time, with waving semaphore arms and red-green lamps, operated by gas, for night use. Unfortunately it exploded, killing a policeman. The accident discouraged further development until the era of the internal combustion engine. Modern traffic lights are an American invention. Red-green systems were installed in Cleveland in 1914. Three-colour signals, operated manually from a tower in the middle of the street, were installed in New York in 1918.
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Which country is the largest cutting and polishing of diamonds centre in the world?
Today India is the largest diamond cutting and polishing center in the world. It enjoys 60% value share for diamond cutting and polishing, 85% volume share and 92% share of the world market in terms of number of pieces.
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Why does your hair turn white when you get older?
As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent color like gray, silver, or white as it grows.
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