Weird facts about the human body are fascinating to learn. One example: A human adult's skeleton is replaced every ten year. It has four blood groups and 206 bones. Two kidneys also exist. The human body is among the most complicated on Earth.
An adult human's skeleton replaces itself every ten years
The human body's skeleton continues to change and rebuild itself throughout adulthood. Bone remodelling and repair are made possible by bone cells. Over the course of a human's life, nearly 100 percent of the bone tissue in his or her body is replaced. Osteoblasts, which are bone cells, break down and create new bones. This is called bone remodeling. A bone density measurement measures the amount of bone mineral within a bone.
It has two lungs
The human body has two lungs, or lobes, that are located in the chest cavity. These organs are responsible to exchange air and remove carbon dioxide. Each lung is protected by a membrane known as a pleura. The main bronchus connects the pleura to the heart and the trachea. The thin, light, elastic pleural membranes act as a filter for air. They also allow air into the lungs via the nose or mouth.
It has two earlobes
Despite having many similarities, human ears have different sizes, shapes, and colors. The complex structure of the earlobe allows us to hear and walk. Men's ears are typically larger than women's ears. The average length of the ear is 2.5 inches. Also, the ear lobes are 0.74 inches long by 0.77 inches wide. According to studies, the size of the ears grows with age.
FAQ
What is the most mysterious place on earth?
Antarctica is the most mysterious continent on Earth.
Why is this place so amazing? Because it is unlike any other spot on Earth.
It is very remote and isolated. This site has more to it than meets your eye.
You'll also find the strangest species of wildlife in this natural wonder.
Let's find out how this mysterious destination became so famous.
Antarctica: The South Pole
Antarctica is named for no one. Some believe it is "land of the ice". Others think it comes from Greek mythology.
In ancient Greece, Antarktis was the name given to the island where Zeus' twin brothers were born. According to one source, one of the twins was conceived in winter. Hence, the word antarctic.
Others believe that the name comes from the Greek words anti meaning against and tropos meaning to turn. This would translate to land that is turned away from the sun.
Whatever the reason Antarctica has held a special fascination for people, it is undeniable.
It is also the lowest, windiest continent, driest, and highest. It is too cold to support trees, plants, and animals.
This frozen wasteland is still alive.
It is home to approximately 90 percent of all life on Earth. About 50% of the world's plant and animal species can be found here.
What is it that makes Antarctica so unique? Here, water is frozen into ice rather than vaporizing into the air.
This causes large ice masses to rise above the ground.
These floating glaciers make up 80%. They're getting bigger every year.
The Antarctic ice sheet has grown 60ft since 1960.
If the melting goes on, the sea level may rise by as much as 200 feet. It could result in massive flooding all over the world.
However, not all scientists believe this to be bad news. Some scientists believe that global warming can be beneficial. They suggest that rising temperatures could cause ice sheet melt faster, leading to floods that flush out toxic chemicals from soil and bodies.
Others warn that this theory sounds like something out of a science-fiction movie.
Why are actors blacklisted?
An actor is more likely to get rejected than a writer. Actors are likely to be rejected often. You will find someone who loves and accepts you eventually.
Actors have a lot of talent, so they can make a decent living almost anywhere. Actors don't really care about making money. Actors love acting, and love telling stories. You'll be an actor if you love acting.
Sometimes, auditions are cancelled because you are either too young or too old for the job. Or, you could lose out on a role in a movie. It happens all the times.
You may be criticised once your casting is complete. Some people will say that you look awful or shouldn't wear makeup. If you're lucky, you won't even hear negative comments.
Sometimes, your performance as a fictional character can be ridiculed. Maybe you play a gay man, and everyone thinks you're straight. Maybe you are a woman who is tough but cries often.
Or maybe you're asked to change your voice. Sometimes, they will ask you to sound more like a woman or a man. They will usually ask you to sound better.
Negative criticisms are best ignored. Actors feel like they've failed when told they did wrong. They haven't done any wrong.
They were not born with the talent that would make them famous. Sometimes, no matter what they do, they just don't fit the bill.
Blacklisting an actor could be for many reasons. Some people don't like actors. Others feel that actors are lazy. Still, others say that actors are cheaters.
Whatever your reason, it doesn't matter. You won't get blacklisted for trying. There are many jobs out there and you'll be able to find them.
Keep trying and you will eventually succeed.
Which is the most secretive city in the world?
It may surprise you to hear the answer. It might even make you uncomfortable because it challenges our perception of reality and how we live. But there is an explanation for why this place exists, and it's not what you would expect.
It was known as the City of God to the ancient Greeks. It was also called the City of Destruction in the Bible.
It is called Kashi (Kashmir in India). It is called Novgorod (Russia).
Here in America, however, it is called The Village That Disappeared.
One tiny town in western New York State lost its 1,200 inhabitants without trace. With the exception of a road marker pointing to its former site, there were no remains: cars, bodies, houses.
This tiny community disappeared without leaving any clues as to where it went or when. Some say it was swallowed up by the Earth. Others claim that a meteorite hit destroyed it. Others believe that aliens took it.
Regardless of what happened, residents of this once-thriving town are certain that their town won't be forgotten forever. They had just moved to a new town.
There's even a website that tracks the disappearances and recoveries of Zugspitz.
So where is this town? It's in Switzerland, actually!
The border of Austria and Germany is at Zugspitze. The lake Lake Zugspitze is just beyond the mountain's summit.
It has always fascinated my that so many towns have disappeared but others still exist. Is it possible that some towns disappear and others are preserved? I decided that I would investigate.
I wanted to know more about the mysterious disappearing towns. What makes a town disappear? How can one place vanish from existence?
There are several theories behind the disappearing of towns. One theory states that a town vanishes when all its buildings are destroyed. Another theory says that the town just moves. A third theory claims that the town never existed at all.
Although theories may be a bit speculative, it is a fact that numerous towns have been destroyed by the elements. This video examines both the history and current status.
Did you know that there are approximately 1.6 billion metric tons of trash produced every day in the world?
The United Nations estimates that the average person generates more than 2.5 pounds of waste each day. This adds up to over 25 million pounds of garbage annually!
The majority of this garbage ends up in incinerators or landfills. But what happens when the dumpsters become full? Most of that trash is shipped out of the country. It is then dumped in other countries, where it pollutes their ecosystems.But now, thanks to the work of one man, we know exactly where all this trash goes. Mike Sexton is his nickname. He runs Waste Watchers, a company that monitors the movements of trucks carrying trash all across North America. He then reports back to us on what happens next.
Sexton said he enjoys his job. "We've got a lot of fun," he told CNN. "We see these big trucks coming through town, so we'll keep following them. "Sexton started following truck driver almost 20 years back.
He stated, "I just fell in Love with It."
He loved the story of the driver who pulled into an abandoned gas station near Los Angeles. Sexton remembered, "The man was looking for somewhere to put the load." "He saw the building as he drove down the road. He backed up and entered the building. "There were two huge roll-off containers there filled with stuff. The man got everything out of the truck and began filling it up again. "Then, he took everything out and started filling up the truck again. There were a bunch of old tires, rags, furniture, mattresses, boxes, bottles, cans, and whatever else. "It was a complete mess. But it had been cleared out before he arrived. There wasn’t trash everywhere."
This is the reason why it happened. This particular spot used to be a recycling center. People would drive there to recycle their trash. Sexton said that people would bring their household items to the building and then leave empty containers behind.
You might see this happen hundreds of times a day. This could happen hundreds times per week. Finally, the truck stops running completely due to its excessive junk. The owner eventually decides to dump the truck.
But, this isn't the only problem that our planet is facing.
The majority of these particles are made of small pieces of plastic. Others get washed into rivers or oceans.And when they reach the ocean, they often end up in the stomachs of fish.
Experts warn of a possible global food crisis if nothing is done. Experts warn that if we continue to go the same way, we won't make it. However, scientists and most people aren't worried.
Statistics
- In fact, nearly 24% of U.S. women are affected with one or more pelvic floor disorders, according to research funded by the National Institutes of Health. (romper.com)
- In one 2014 study published in the Archives of Medical Science that sought to study the prevalence of these mites, research showed that 41% of the people had them hanging out in their eyelashes. (romper.com)
- It might not sound like something that's truly plausible — and it is quite rare — but according to a 2015 study published in the Asian Cardiovascular & Thoracic Annals, it's possible to hurt yourself and even break a rib just by sneezing. (romper.com)
- Your mouth makes a lot of saliva every day It might seem like way too much, but your salivary glands typically produce anywhere from 0.5 and 1.5 liters a day, according to a 2009 study published in the Journal of Medicine and Life. (romper.com)
- "It is estimated that 75% of people have at least mild gum disease, with the most common symptoms being bleeding when brushing, bad breath, and dark and swollen gums," Dr. Ron Baise, a London-based dentist, tells Romper. (romper.com)
External Links
How To
Secrets of the united states that became declassified
The United States is a land of opportunity where anyone can achieve success. However, there are also many secrets that have been kept quiet for years that could impact how we live.
These secrets include:
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The US government holds more than 5 million secrets documents that have not been made public. These documents contain information on UFO sightings as well as alien life forms and human cloning. There have even been attempts to assassinate world leaders.
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In 1947, President Harry Truman authorized the creation of the Central Intelligence Agency. This agency was established to aid the president during wartime and keep America secure from foreign threats.
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The CIA used to use mind control experiments against American citizens without their permission. One of the most famous examples of this was Project MKUltra.
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During World War II U.S. Military conducted thousands of tests on civilians. Some of these tests included exposing soldiers to mustard gas or biological weapons.
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The Pentagon admitted in 1992 that it had conducted germ warfare tests on Guantanamo prisoners.
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The CIA has secretly built prisons throughout the globe to hold terror suspects. They then send them to countries like Thailand and Poland.
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The death squads, which are used to execute political dissidents all over Latin America, have also been funded by CIA.
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The US Air Force continues its chemical warfare testing that is in violation of numerous international treaties.
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The Department of Defense frequently violates its rules regarding animal experimentation on humans.
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The Coast Guard has routinely violated federal law while arresting protesters along coastal waterways.
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The Transportation Security Administration, (TSA), performs illegal searches on ordinary passengers at airports all over the country.
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The CIA operates targeted killing programs beyond recognized battlefields using armed drones or "assassination team" methods.
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The Office of Public Affairs is responsible for the operation of the CIA. Its employees still write alternative media articles, which are distributed to intelligence agencies and contractors. OPA writers claim UFOs/Aliens, 9/11, climate changes, and other sensitive topics have been kept secret by national security personnel who fear for the public's attention.
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The US Air Force maintains files about nearly 7 million Americans it considers subversive.
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The US Army has employed undercover agents provocateurs to organize violent protests and race riots.
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For the purpose of selling advertisements, the NSA gathers telephone logs and credit card data from corporations.
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The FBI has been stockpiling weapons and ammunition since 1980, but most people won't be aware of it. The FBI now stores over 10 million ammo and over 1.5 billion gun rounds!
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The Homeland Security department has built concentration camps where inmates are detained, tortured, and killed. These detention centers are not open to members of Congress.
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The NSA engages in domestic spying campaigns against activists and journalists whose only crime is criticizing government officials or speaking out against abuses.
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Massive computer surveillance is carried out by the NSA against innocent citizens. Many of these are not related to terrorism.
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The NSA conducts mass surveillance on cell phone and email accounts of foreign leaders and celebrities, members and judges of Congress, and even the President of the United States.
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The NSA intercepts financial transactions, and tracks movements of private individuals.
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The NSA spies on global stock markets and exchanges and monitors energy production facilities.
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Without obtaining search warrants the NSA hacks into computer networks, installing keystroke loggers and other software on computers.
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The NSA uses cyber warfare techniques to disable enemies' communications systems.
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The NSA monitors social media sites like Facebook, Twitter and YouTube.
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To propagandize propaganda, the NSA creates fake online identities in order to impersonate hackers.
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The NSA is able to infiltrate chat rooms and messageboards in order to gain personal data.
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To manipulate online discussion groups and forums, the NSA creates fictitious persons.
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The NSA hires homeless people to install spyware on smart devices.