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Interesting Facts About the World You Probably Didn't Know 1. The Earth has been around for about 4.54 billion years. 2. There are approximately 8.7 million known species on Earth. 3. The tallest mountain in the world, Mount Everest, stands at 29,029 feet. 4. The deepest part of the ocean, the Challenger Deep, is about 36,070 feet deep. 5. About 71% of the Earth's surface is covered in water. 6. The Great Barrier Ree「分析更多 姻缘配对内容请关注 :南星星座运程网,wwW.InanXIng.cOm」f, the world's largest coral reef system, is approximately 1,429 miles long. 7. The Earth's atmosphere contains about 21% oxygen, 78% nitrogen, and 1% other gases. 8. Antarctica is the coldest continent on Earth, with temperatures reaching as low as -128.6°F. 9. The world's largest living organism is a fungus known as Armillaria ostoyae, which covers 2,200 acres in Oregon. 10. The oldest living tree in the world, a Great Basin bristlecone pine known as Methuselah, is over 4,800 years old. These facts about the world may seem insignificant, but they remind us of the vastness and complexity of our planet. The world is full of surprises and wonders waiting to be discovered. It is important to appreciate and cherish the natural beauty around us and to continue to learn and explore the mysteries of the world.