Elenca 10 cose che sai essere assolutamente certe.
- The human nose can detect over 1 trillion different scents.
- The human heart beats around 100,000 times per day and pumps about 2,000 gallons (7,571 liters) of blood throughout the body.
- The surface area of an adult’s lungs is roughly the size of a tennis court.
- Humans are born with 300 bones, but as they grow, some bones fuse together, leaving adults with 206 bones.
- The human body produces about 25 million new cells every second.
- The strongest muscle in the human body is the masseter, which is located in the jaw and is used for chewing.
- The human eye can distinguish around 10 million different colors.
- The human brain contains about 100 billion neurons, which are responsible for processing and transmitting information.
- A human sneeze can travel up to 100 miles per hour (160 kilometers per hour).
- The human skin is the largest organ in the body and accounts for about 15% of a person’s total body weight.
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- Earth is the third planet from the sun and is the only known planet to support life.
- The human brain weighs about 3 pounds and is the most complex organ in the body.
- The Great Barrier Reef is the largest coral reef system in the world, located off the coast of Australia.
- The International Space Station (ISS) is a habitable artificial satellite that orbits the Earth.
- The tallest mountain in the world is Mount Everest, which stands at 29,029 feet (8,848 meters) tall.
- The fastest land animal is the cheetah, which can run up to 70 miles per hour (112 kilometers per hour).
- The largest country in the world by land area is Russia, followed by Canada and China.
- The United States of America is a federal republic consisting of 50 states, a federal district (Washington D.C.), and various territories.
- The Great Wall of China is the longest wall in the world, stretching over 13,000 miles (21,000 kilometers).
- The human body is made up of about 60% water.

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