People have wondered throughout history if there is another planet beneath the earth. It existed even though ancient Greeks believed it, although their beliefs were more mythological that literal. Modern science shows that our planet is composed primarily of layers of liquid magma, dense hot core, and other layers. However, the popular 17th-century theory that our planet was hollow meant that there is another world below it was one of the most popular.
Plate tectonics
Earth is currently undergoing a continuous process of plate tectonics. This is responsible for the formations of mountains and oceans as well as the incandescent volcanic eruptions we see today. In the future however, platetectonics will cool to the point that the planetwide conveyor will stop, ending the process which reshapes the planet.
Habitable zones
Earth is an example planet with a habitable region under its surface. The solar radiation and the planetary luminosity are the factors that determine the limits of the zone. The solar constant is 0.53 times the upper limit. This is equivalent in astronomical units of 1.37.
FAQ
Five interesting facts about your liver.
The liver is responsible in breaking down toxins, storing vitamins and mineral, and for regulating blood pressure. It helps maintain a steady body temperature and regulates blood pressure.
We hear it all the time: "I feel sluggish today" or "my head feels heavy". These symptoms may indicate problems with the liver.
Other symptoms include itching, yellowing of the skin, heavy urine, yellowing of the skin, fatigue and nausea. These aren't all warning signs. If you experience any of them, make an appointment with your doctor immediately.
The liver is an important organ. It is essential for detoxification and metabolism as well as reproduction.
-
An adult liver weighs around 1,400 grams.
-
At birth, a baby's liver is half the size of an adult. It is four times larger by the time an infant turns three.
-
The liver is located below the ribs on the left-hand side of your abdomen.
-
There are 16 major lobes of the liver. But there are also many smaller ones.
-
There are approximately 10,000,000 red blood cells in the liver.
How does the brain regulate the functions of the body?
The brain communicates with other organs to ensure their cooperation. Your body's functions are controlled by your brain. It tells the stomach to digest food, and the lungs to breath air. It also tells your legs and arms to move.
Your brain consists of billions of nerve cells connected in groups called neurons. Neurons communicate by sending electrical signals, called action potentials, on axons. Every neuron has a cell wall around its nucleus. The cell membrane houses channels that allow ions, such as potassium and sodium, to enter and exit the cells. Ion movement creates the electric charge that causes the neuron to fire.
When a neuron is activated, neurotransmitters release chemicals into the space between it and the next neuron. Neurotransmitters bind with receptors on the second nerve cell, opening ion channel channels to allow ions in and out. As a result, the second neuron fires too.
Neurotransmitter release occurs when the presynaptic neuron receives an impulse from another neuron. The impulse travels along an synapse between the neurons. The transmitter binds with the receptors of the postsynaptic nerve, activating the firing of the postsynaptic neurons.
The nervous system relies on neurotransmitters for communication. They also coordinate activity between different brain parts.
Have you ever wondered how much trash is produced worldwide each day?
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. His name is Mike Sexton. He is the founder of Waste Watchers. He watches over trucks that transport trash across North America. He then reports back about what happens next.
Sexton stated that he finds the job very satisfying. CNN spoke with Sexton that they have a lot fun. "We often see large rigs passing through our town and we will follow them. "Sexton started following truck drivers nearly 20 years ago.
He stated that he fell in love with the product.
Sexton's favorite story was about a driver who stopped at an abandoned gas station in Los Angeles. Sexton remembered, "The man was looking for somewhere to put the load." "He drove down the road and saw this building. So he pulled over and went inside. "There were two huge roll-off containers there filled with stuff. He took out everything and began to fill up the truck. "Then he looked at the place and decided to unload everything. There were lots of old tires, rags furniture, mattresses, mattresses, cans, cans, and other items. "It was just a total mess. It had been cleaned up before he arrived. There was no trash."
What is the explanation? Well, the answer is that this particular location used to be part of a recycling center.People who learned about this facility would drive here to recycle their trash. "They'd bring their household items and take them to this building," Sexton explained.And after they finished, they would leave the empty containers behind.
Now, because of the way the law works, once a container reaches its destination, it cannot be opened.So no matter how often someone takes something out of it, the thing will never be emptied.Every time the truck comes by, it has to start over again. This can happen hundreds of times a week.Eventually, the truck becomes so overloaded with junk that it stops running. The owner eventually abandons the vehicle.
However, trash is not the only problem on our planet.
Most of these particles are made up of tiny pieces of plastic.Some of these plastics end up in landfills or incinerators. Others get washed into rivers or oceans.And when they reach the ocean, they often end up in the stomachs of fish.
Experts warn us that we may soon face an international food shortage if things don't change. One expert said, "If we keep going as we are going, we're never going to make it," but most people don’t seem concerned.
What is the most intriguing fact about the human anatomy?
There are two eyes, two ears. Two nostrils. Four limbs. A mouth, nose and penis. Yes, more than 50 parts to our bodies. But one thing is missing. A heart.
The heart is a pump which circulates blood throughout the body. The blood moves through the veins. It transports oxygen and nutrients to your cells. It also removes carbon dioxide.
The heart pumps out about 5 liters per minute. This is equivalent to an adult consuming 2-3 cups of coffee per day.
The heart is constantly pumping blood, 24 hours a week, 365 day a year. When you're asleep, your heart beats approximately 100 times per hour.
Because of the color and texture of their skin, you can tell if someone is healthy or sick. Looking closely at the skin's surface, you can see tiny blood vessels called capillaries. These vessels carry blood away to the heart via the large blood vessels. When blood flow is blocked, the skin turns blue or purple.
People with sickle cells lack red blood cell. They become very sick when their blood becomes hardened and sticky.
Bandages are used to stop bleeding after you have cut yourself. For the wound to heal properly, blood must continue to flow. To do this, doctors insert a needle through the skin into the vein next to the injury. This allows the blood to drain from the injured area.
Doctors may also insert catheters (catheters), in an artery to treat a blood clot. This keeps the patient alive until the clot breaks up naturally.
Statistics
- A 2012 paper published in the Proceedings of the National Academy of Sciences reported that people blink about 15 to 20 times each minute, meaning, if you do the math, you spend about 10% of the time that you're awake blinking. (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)
- The average human adult male heart rate is between 70 and 72 beats per minute, while the average for adult women is between 78 and 82 beats, which is significantly faster, according to 2014 published in the Journal of Clinical and Diagnostic Research. (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)
External Links
How To
Hollywood Actors With Dark Past
Many of us have heard about actors with dark pasts. We may never be able to find out for certain because we cannot go back in time and speak directly with them. You don't have to go too deep to find out about the lives these actors lead.
Internet is a fantastic tool for finding information regarding famous people. You not only learn interesting facts but also read about their lives.
For example, suppose you are interested in Samuel L. Jackson’s childhood. If you type his name into Google, you'll probably come across a website called "SamuelLJacksonChildhood." This website contains photos of him in his youth, articles about the family, and even a bio.
While this information may seem dull, it can help you connect better with Samuel L. Jackson. For example, you may be surprised to hear that he was raised in a rough neighborhood but rose to prominence after overcoming many obstacles.
Perhaps you feel inspired to overcome your challenges, or maybe you learn that Samuel L. Jackson is currently working on a movie about his life. Either way, personal experiences can help you connect more deeply with Samuel L. Jackson.
This website is one of many online. These websites can be used to find out more about famous people. You may be surprised at what you uncover.