Dubai is the best in all the world.

[ Edit this paragraph] The world's most

the world's most acidic substance-this compound, called carborane acid, is 1 million times more acidic than concentrated sulfuric acid. The sweetest substance in the world is Catan essence. It is extracted from the wild plant "Katanfei" in Ghana, Africa, and its sweetness is 6, times that of sucrose. The most bitter substance in the world is ammonium benzoate acylate. It is a white crystal. If you dilute it to one tenth of the concentration and lick it with your tongue, you can still feel its bitter taste. The hottest thing in the world is "Tezipo" pepper. One of the most poisonous substances in the world is polonium. The toxicity of polonium 21 is 25 million times higher than that of cyanide, and .1 gram of polonium can kill 1 billion people. H2Se is the dirtiest and hottest sea in the world at present. The Red Sea and the Mediterranean Sea are located between Asia and Africa. It is the hottest sea and the youngest sea in the world. It is a deep sea with an area of 45, square kilometers, a length of 2,1 kilometers and an average width of about 29 kilometers, with an average depth of 558 meters and the deepest point of 2,74 meters. The most special thing about the Red Sea is its "heat". The annual average water temperature of the earth's ocean surface is 17℃, while the surface water temperature of the Red Sea can reach 27℃ ~ 32℃ in August, even in deep water below 2 meters, it can reach about 21℃. What is even more strange is that in the deep sea basin of the Red Sea, the water temperature is as high as 6℃! The Red Sea is located in the area controlled by the high-pressure belt returning to the north, and its belly is influenced by the tropical desert climate of North Africa and Arabian Peninsula. The climate is dry and hot all year round, so the water surface is always warm. The expansion of the seabed has caused cracks in the earth's crust, and the magma has been upwelling along the cracks, and the rocks on the seabed have been heated, so the water temperature at the bottom of the seawater is particularly high. The Mediterranean Sea is the largest inland sea in the world and the most stolen sea in the world. Every year, 3.5 billion cubic meters of wastewater and 13 million tons of solid waste are poured into the Mediterranean. The most serious problem is that 58 oil ports in 18 countries near the sea have brought serious oil pollution to seawater when loading and unloading oil. The largest carnivorous fish-the largest carnivorous fish is a rare great white shark. The average adult great white shark is 4.5 meters long and weighs about 65 kilograms. There is evidence that some great white sharks can be more than 6 meters long. The most dangerous animal-since the Stone Age, except for human deaths caused by wars and accidents, half of the deaths are attributed to malaria parasites carried by mosquitoes belonging to the genus Anopheles. In 1997, the World Health Organization estimated that malaria still killed 15 people every year. The most poisonous animals-the poison sword frog in South America and Central America can secrete deadly toxins. The skin secretion of the golden poison sword frog is the most toxic. Scientists must wear thick gloves when handling specimens. The most poisonous snake-The most poisonous snake in the world is the Belcher Sea Snake, which lives around the reefs in the ashmore Islands in northwest Australia. Its toxicity is many times greater than that of any land snake. The most poisonous snake on land is the inland Taipan snake in Australia, which is 1.5 meters long. One snake's venom can poison 25, mice. The most poisonous fish, the puffer fish in the Red Sea and the Indian Ocean and the Pacific Ocean, has a deadly toxin, which is one of the most powerful non-protein toxins. This toxin exists in the ovary, blood, lungs, small intestine and skin of fish, and .1g is enough to poison an adult within 2 minutes. The stone fish found in the tropical sea of the Indian Ocean-Pacific Ocean has the largest poisonous gland, and its fin spine contains toxins, which will kill people if they touch it. The most poisonous jellyfish-In the past 1 years, the venom of the box jellyfish off the coast of Australia has killed at least 7 people. It is said that if there is not enough medicine, some victims will die within 4 minutes. An effective defense tool is women's stockings. Jellyfish stinging organs can't penetrate this substance. The toxin released by the most dangerous sea urchin, Huahai Sea urchin, can cause severe pain, dyspnea and paralysis. The most dangerous bee, the hybrid bee from Africa, is not more toxic than other bees, but it can be fatal when it stings people in groups. The most poisonous centipede-There is a dangerous and strange centipede in Solomon Islands. It is very toxic and can attack people through its forelimbs without jaws. It is said that the victims will put their bitten hands into boiling water to relieve the pain. The most dangerous ant, the fire ant, originated in South America and arrived in the United States with an earth-moving ship in the 192s. In May 1995, about 23, trout were killed by eating fire ants in Guadalupe River in central Texas. Fire ants like power supply and often bite off insulators, leading to power failure and fire. The most dangerous bear, the polar bear, is the only bear that actively attacks humans. Most polar bear attacks occur at night. The most dangerous crocodile-Although most deaths have not been recorded, the number of people killed by saltwater crocodiles is as high as 2, every year. The crocodile attack that caused the most casualties occurred at the end of the Second World War, on the night of February 19th to 2th, 1945. At that time, the allied forces attacking Langri Island in Myanmar trapped 8-1 Japanese infantry in a swamp on the shore. By the next morning, only 2 Japanese soldiers had survived, convinced that most of the rest had been eaten raw by crocodiles. The most dangerous cat, the tiger, attacks people more frequently than other cats, perhaps because people are in the size of tigers' prey, and even for old or injured tigers, they are very easy to catch. The most powerful animal meshing force-In the experiment conducted by the Marine Biological Laboratory in Bimini Islands, Bahamas, it was measured that the meshing force between the upper and lower jaws of a 2-meter-long dark-black shark was 6 kg, which is equivalent to biting with teeth with a force of 3 tons per square centimeter. Larger sharks, such as the great white shark, may have greater meshing force, but it has not been measured so far. The longest deadly snake-this reticulated snake with the keeper of London Zoo in England, usually exceeds 6.25 meters in length. They can entangle their prey with their long bodies and eventually kill it. The most ferocious fish-sawtooth fish attacks all injured animals or creates chaos in the water. It is reported that in 1981, an overloaded ship overturned and sank while berthing in Obidos, Brazil, causing 3 people to be eaten by sawtooth fish. The most appalling fish, the electric eel, which lives in the fresh water of Brazil and Guyana, has two pairs of longitudinal organs that can emit 65 volts of electric shock with energy to light an electric light bulb or make adults unconscious. The venom in the glands of the most poisonous lizard, the Gila giant lizard in Mexico and the southwestern United States, and its close relative, the Mexican spider lizard, is enough to kill two adults. The most dangerous small mammal-the most threatening small mammal to human beings is mice, which carry more than 2 kinds of pathogens, including bacteria that can cause bubonic plague or Black Death. The slowest animal-sloth. The sloth is a surprisingly lazy mammal. In the face of danger, its escape speed can't exceed that of the largest dragonfly of .2m/s-distributed in South America. It is 12 cm long and is the largest dragonfly in the world. Mola, the fish that lays the most eggs, can lay more than 3 million eggs at a time, making it the world's largest fish. The heaviest insect, the Jinhua University of Science and Technology beetle, weighs between 7.9 and 99.2 grams and is the heaviest insect in the world. The fastest flying insect-Australian dragonfly can reach 58 kilometers per hour, which is the fastest flying insect. Mbuti, the shortest nation, is the shortest nation with an average height of 1.35 meters. Tutsi, the tallest nation, is the tallest nation with an average height of 1.83 meters. The largest sea-Coral Sea, with an area of 479 square kilometers, is the largest sea in the world. Malakhei, the smallest sea, covers an area of only 11, square meters, making it the smallest sea in the world. The highest extinct volcano-Aconcagua Mountain is 696 meters above sea level, which is the highest extinct volcano in the world. The shortest active volcano-Mount Tai is only 2 meters high, which is the shortest active volcano in the world. The longest-lived mammal-there is an elephant that can live from 18 to 2 years old and is the longest-lived mammal in the world. The most poisonous animal-the golden stinger frog can kill 15 people at once, and it is the most poisonous animal in the world. The heaviest egg-ostrich egg weighs 18~2 grams on average, which is the heaviest egg in the world. The smallest egg-grass bird, only .36~.37 grams, is the smallest egg in the world. The smallest spider-the display spider, biologists once collected an adult male exhibition spider in the West Samol Islands, with a body length of only .43 cm, which is not as big as the period in printed words. The smallest bird-the smallest bird in the world is a "miniature" hummingbird, which weighs 2 grams and is 5 centimeters long from the tip of its mouth to the tip of its tail. The smallest mammal-a few years ago, a new contender for the title of "the smallest mammal" was found in the tropical jungle of Thailand-flying squirrel. It weighs about 2 grams, has a body length of 3 cm, a head length of 11 mm and a wingspan of 5.5 cm, and feeds on small insects. The longest-lived dog-This spring, the oldest "dog birthday star" in the world died in Brisbane, Austria, at the age of 32, which is equivalent to living 224 years. A blue whale, the largest milk-producing mammal, can produce 43 liters of milk every day during lactation, which is equivalent to five times that of the best cows. The most fragrant flower-it is generally considered to be an orchid known as the "fragrant ancestor". Orchids also have the reputation of "the best fragrance in the world". The plant with the longest leaf life-the most drought-resistant flower of Baisuilan-is the arrow lotus, also known as cactus flower. The flower with the most colors and varieties is the Chinese rose. There are tens of thousands of kinds of flowers in the world, the colors are red, orange, white and purple, as well as mixed colors, cross colors, silk colors, multiple colors, edging, and rare flowers that change colors most, such as blue and coffee-it is a rare variety of carnation flowers. This kind of flower is snowy white in the morning, rose in the noon, and purple in the evening-colored hibiscus whose flowers are white at first, light red the next day, dark red later, and purple again when the flowers fall. According to the Southern Song Dynasty's A Kind of Art Must Be Used, Qiongzhou produces a kind of "colored hibiscus", which is called "civil servant flower" because it is yellow on one day, pale red on two days, dark red on four days, and even purplish. The flower with the most noble temperament-the peony is full of pride, and the flower with the most integrity-the plum blossom epiphyllum, which is shining for a while and moving every second. The most affectionate flower-the most punctual flower on the other side-the most outstanding "canal" in the world-the human heart can work continuously for more than 1 years, pumping out 6 to 8 tons of blood every day, and the blood pumped out in three and a half years is enough to float a 1,-ton ship. The world's smallest "radio station"-scientists have found that every human cell is a miniature radio station, which can emit electric waves with a frequency of 15K·C, which is slightly lower than the radio frequency. The world's smallest "chemical plant"-most of the metabolism of the human body is chemical changes. Under the management of hundreds of catalysts called "enzymes", chemical reactions are carried out in turn according to a series of complicated procedures. Most of all this is done in the smallest "chemical plant"-the liver weighing only 1.5 kilograms. The most primitive "engine" in the world-the lung is like an engine, which promotes the speed of human oxidative metabolism. The lungs can hold 4.5 liters of air when the chest cavity expands at its maximum. The area where the lungs absorb oxygen is 129,27 square centimeters. The most peculiar "steel bar" in the world-the human body is supported entirely by bones, which are hollow, but there are many arts and sciences structures that meet the mechanical requirements, and each square meter of bones can bear the weight of 1 ton. The most expensive coffee in the world-Kopi Luwah coffee produced in Sumatra. The price per pound is as high as $3! Coffee is produced all over the world. The quality of coffee produced in some regions is superior and well-known. Usually due to its low production and excellent taste, including Blue Mountain in Jamaica, KONA in Hawaii and Peaberry in Tanzania. This kind of coffee is expensive because of its high quality and rarity. However, there is a kind of coffee that beats the so-called top coffee listed above with its unique taste, rarity and strange production process. The name of this coffee is KOPI LUWAK. The annual output is only about 5 pounds. Things are scarce, and the price of KOPI LUWAK is $3 a pound. The price may reflect its rare characteristics, and its "production" process can be described as "unusual". KOPI (Indonesian, coffee) LUWAK is produced in Sumatra, Jawa, and Survish islands, and is part of 13,677 islands in Indonesia. LUWAK coffee is as expensive as gold and silver. It is not the infinite scenery on a fake island, but how it is produced. On these islands in Indonesia, there is a kind of marsupial civet cat, which belongs to the genus Dendrolimus. Locals hate this kind of civet cats because they often eat the ripest and reddest coffee fruits in coffee trees. I don't know who first thought that this animal can eat, digest and excrete. Some shameless, desperate, or just lazy locals choose relatively complete beans from the excrement of civet cats, which are still wrapped in pulp mucus. Perhaps it is through the fermentation of enzymes in animal stomachs that this coffee bean has a unique flavor. Interestingly, this special "production process" is not unique to the coffee industry. ARGAN, which is similar to rubber tree, is produced in Morogo and produces olive-like fruit, from which ARGAN oil can be squeezed. In Morogo, Berbers drive sheep up trees and let them eat the fruit from the trees. Then they collected sheep dung, removed the dung and squeezed the fruit out of ARGAN oil. ARGAN oil can be used for massage, eating and aphrodisiac. It is assumed that from the beginning, Indonesian islanders used it to produce the most expensive coffee in the world without climbing trees. How does this coffee taste? The taste is very thick and caramel. Although coffee beans have some stale flavor and jungle fragrance, baked beans have a very complex fragrance. Because the gastric acid and enzymes in the digestive system of civet cats are very different from the fermentation process of coffee with water, coffee is as thick as syrup. KOPI LUWAK coffee tastes mellow and smooth. Coffee as thick as chocolate pulp can make your tongue feel a long and clear aftertaste. The deepest lake in the world: Lake Baikal, with an average water depth of 73 meters and the deepest depth of 162 meters, with an elevation of 456 meters. The largest freshwater lake, Lake Superior, is 616 kilometers long from east to west and 257 kilometers wide from north to south, covering an area of 82,4 square kilometers. The lakeshore line is 3 kilometers long. The lowest lake, the Dead Sea, is 4 meters below sea level. The largest saltwater lake-Caspian Sea, which is also the largest inland lake in the world, is located in the vast and flat western Central Asia and the southeastern tip of Europe, with the Caucasus Mountains in the west. The whole sea area is long and narrow, with a length of about 1,2 kilometers from north to south and an average width of 32 kilometers from east to west. It covers an area of about 386,4 square kilometers, which is more than twice as large as the five largest freshwater lakes in North America combined. The oldest tree-a thorn-cone pine named Matthew Chera in California, USA, is as old as 64 years old; There is also a tree.