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Who completed the first circumnavigation of the world?
The Spanish Magellan-Elcano expedition of August 1519 to 8 September 1522, started by Portuguese navigator Fernão de Magalhães (Ferdinand Magellan) and completed by Spanish navigator Juan Sebastián Elcano after Magellan's death, was the first global circumnavigation.
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Why does the earth act like a magnet?
Earth's magnetic field is mostly caused by electric currents in the liquid outer core, which is composed of conductive, molten iron. Loops of currents in the constantly moving, liquid iron create magnetic fields. From afar, the Earth looks like a big magnet with a north and south pole like any other magnet.
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What is the color of Venus?
Venus: yellowish-white; we can only see the thick layer of colorless and featureless sulfuric acid clouds. You can find more detailed info on Venus here. Earth: light blue with white clouds; oceans and light scattered by the atmosphere make Earth prevailingly blue
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How many official languages are spoken in South Africa?
There are eleven official languages of South Africa: Afrikaans, English, Ndebele, Northern Sotho, Sotho, Swazi, Tsonga, Tswana, Venda, Xhosa and Zulu. Fewer than two percent of South Africans speak a first language other than an official one.
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How many years is 1 human year to a dog?
But the conventional wisdom that one dog year equals seven human years is an oversimplified view of how old your dog is in human years. Although a dog's age averages out this way, there is quite a bit of variation. For example, dogs mature more quickly than children in the first couple of years.
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Who was algebra named after?
The word algebra comes from the Arabic language (الجبر al-jabr "restoration") from the title of the book Ilm al-jabr wa'l-muḳābala by al-Khwarizmi. The word entered the English language during Late Middle English from either Spanish, Italian, or Medieval Latin.
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What causes the color of the red sea?
Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.
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Why is beer in brown bottles?
Beer bottle is a bottle made to contain beer, usually made of glass and comes in various sizes, shapes and colours (usually brown or green). Dark amber or brown glass greatly reduces the presence of UV light, a contributing factor of beer spoilage. However, lighter-colored bottles are often used for marketing reasons.
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What are the 13 colonies of the United States?
In the end the thirteen colonies were: Delaware, Pennsylvania, New Jersey, Georgia, Connecticut, Massachusetts Bay, Maryland, South Carolina, New Hampshire, Virginia, New York, North Carolina, and Rhode Island and Providence Plantations.
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What is the country of Brazzaville?
In order to distinguish between the two African countries with "Congo" in their names, the Republic of the Congo is sometimes called Congo-Brazzaville, as opposed to Congo-Kinshasa (the Democratic Republic of the Congo, known from 1971 to 1997 as Zaire, the capital of which is Kinshasa).
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How deep does a whale go in the ocean?
They have been tracked by sonar diving to depths of 3,900 feet. However, one Sperm whale caught by a whaling ship in water 10,000 feet deep had a bottom-dwelling shark in its stomach, leading researchers to believe that the Sperm whale can dive a lot deeper than seems possible.
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Why do you get on the left side of a horse?
You have to go back to ancient times when horses were used as war mounts. Soldiers carry their swords on the left side (to reach with their right hand) and so they could only mount from the left or they would sit on their sword.
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Do women have an Adam's apple?
The Adam's apple is actually caused by the bulging of a set of cartilage plates that are held together by tissues and muscle fibers, which protect the vocal cords. Women have these plates, too, but the bulge is more prominent in men for two reasons: Testosterone causes the larynx to grow rapidly during puberty,
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Can you predict an earthquake?
No, and it is unlikely they will ever be able to predict them. Scientists have tried many different ways of predicting earthquakes, but none have been successful. On any particular fault, scientists know there will be another earthquake sometime in the future, but they have no way of telling when it will happen.
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When did Australia get its own currency?
The Australian pound, introduced in 1910 and officially distinct in value from the pound sterling since devaluation in 1931, was replaced by the dollar on 14 February 1966. The rate of conversion for the new decimal currency was two dollars per Australian pound, or ten Australian shillings per dollar.
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How many emirates are there in the United Arab Emirates?
Federation formed in 1971 by seven emirates known as the Trucial States—Abu Dhabi (the largest), Dubai, Sharjah, Ajman, Fujairah, Ras al-Khaimah, and Umm al-Qaiwain. In addition to a federal president and prime minister, each emirate has a separate ruler who oversees the local government.
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How many languages are there in the world?
There are approximately 6,900 distinct languages in existence today, though there may be languages spoken in remote areas that we have yet to discover. No matter how many new languages we find, though, this number will be much lower in 100 years.
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What gland is responsible for regulating metabolism?
The thyroid gland regulates the body's metabolism, while parathyroid glands regulate calcium levels and have no effect on metabolism.
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How fast does a rocket have to travel to escape the Earth's gravity?
If you want to completely escape Earth's gravity and travel to another moon or planet, though, you need to be going even faster - at a speed of at least 7 miles per second or about 25,000 miles per hour.
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How many times does a bee flap its wings in a second?
"In contrast to the fruit fly that has one eightieth the body size and flaps its wings 200 times each second, the much larger honeybee flaps its wings 230 times every second."
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Do you weigh less at the equator?
If you weighed 100 pounds at the north pole on a spring scale, at the equator you would weigh 99.65 pounds, or 5.5 ounces less. Your mass, in grams, however would stay the same because 'grams' is a measure of the resistance of a body to being moved and has nothing to do with acceleration or gravity.
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What are bones made up of?
Bone is made mostly of collagen, a protein that is woven into a flexible framework. Bone also contains calcium phosphate and calcium carbonate, minerals that add strength and harden the framework. The combination of calcium and collagen gives the bone its strength and flexibility.
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What kind of fuel do NASCAR engines run on?
NASCAR engines burn 110-octane leaded gasoline. Indy cars burn pure methanol (a.k.a. wood alcohol, CH3OH). Top Fuel dragsters and funny cars burn nitromethane (CH3NO2).
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What animal can live after being frozen?
Wood Frogs Can Survive Being Frozen Solid, Over and Over. Every autumn, the sanest animals head south, fleeing the encroaching winter lest they freeze to death or get torn apart by yetis.
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What does the Mercedes logo stand for?
The Mercedes-Benz logo is one of those meaningful ones. In 1926, Emil Jellinek, Gottlieb Daimler, and Carl Benz founded what would become one of the world's foremost luxury car companies. The logo is a three-pronged star meant to symbolize universal motorization. The three prongs stand for land, water and air.
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Why Does Urine Glow Under a Black Light?
You can use a black light to detect body fluids. It's actually a good way to look for pet urine or make sure a bathroom or hotel room is really clean. Cat urine, in particular, glows very brightly under ultraviolet light. Urine glows under a black light primarily because it contains the element phosphorus.
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What state is the source of the Mississippi River?
The source of the Upper Mississippi branch is traditionally accepted as Lake Itasca, 1,475 feet (450 m) above sea level in Itasca State Park in Clearwater County, Minnesota.
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What do you call a male and female zebra?
They have been called “striped horses.” Similar to horses, female zebras are called mares and male zebras are called stallions. Babies are called foals. Male baby zebras are called colts and female baby zebras are called fillies.
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Are foxes Social Animals?
Alongside cats and tigers, foxes are solitary hunters. There has been the rare sighting of a vixen hunting with her cub, but in general they will forage and hunt for food alone. Although a fox is classified as a carnivore they are omnivorous and will eat almost anything including fruit and vegetables.
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Which moon in the solar system has active volcanoes?
Jupiter's Moon Io - The Most Active. Io is the most volcanically active body in our solar system. This surprises most people because Io's great distance from the sun and its icy surface make it seem like a very cold place.
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