The most acidic substance in the world, this compound called carborane acid, is 6.5438+0 million times more acidic than concentrated sulfuric acid. The sweetest substance in the world is Catan essence. It is extracted from the wild plant "Kadanfei" in Ghana, Africa, and its sweetness is 600,000 times that of sucrose. The most bitter substance in the world is acylated ammonium benzoate. This is a white crystal. If diluted to one tenth of the concentration, you can still feel its bitterness by licking it with your tongue. The hottest thing in the world is pepper. One of the most poisonous substances in the world is polonium. The toxicity of polonium 2 10 is 250 million times higher than that of cyanide, and 0. 1 gram of polonium can kill10.00 billion people. H2Se is the dirtiest and hottest sea in the world at present. The Red Sea and the Mediterranean Sea lie between Asia and Africa. It is the hottest ocean and the youngest ocean in the world. It is a deep sea with an area of 450,000 square kilometers, a length of 2 100 kilometers, an average width of about 290 kilometers, an average depth of 558 meters and the deepest point of 2740 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 the deep water below 200 meters, it can reach about 2 1℃. Stranger still, in the deep-sea basin of the Red Sea, the water temperature is as high as 60℃! The Red Sea is located in the area controlled by the North Tropic High Zone, and its abdomen 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. 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 65.438+0.3 billion tons of solid waste are dumped into the Mediterranean Sea. 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 650 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 plasmodium carried by mosquitoes belonging to Anopheles. 1997 According to the estimation of the World Health Organization, malaria still causes 150 deaths every year. The most poisonous animals-the poison sword frog in South America and Central America can secrete deadly toxins. The skin secretion of 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 rocks in the ashmore Islands in northwest Australia. It is many times more toxic than any land snake. The most poisonous snake on land is the inland Taipan snake in Australia, which is 1.5 meters long. The venom of a snake can kill 250 thousand mice. The most poisonous fish in the Red Sea, Indian Ocean and Pacific Ocean-puffer fish has a deadly toxin, which belongs to one of the most powerful non-protein toxins. This toxin exists in the ovary, blood, lung, small intestine and skin of fish, and 0. 1 g is enough to poison an adult within 20 minutes. The stone fish found in tropical Indian Ocean-Pacific Ocean has the largest poisonous gland, and its fin spines contain toxins, which will kill people if they touch it. The most poisonous jellyfish-In the past 100 years, the venom of the box jellyfish off the coast of Australia has killed at least 70 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 cannot penetrate this substance. The toxins 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 may be fatal when it stings people in groups. The most poisonous centipede-Solomon Islands has a dangerous and strange centipede. It is very toxic and can attack people through forelimbs without jaws. It is said that the victim will put the bitten hand in 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 1920s. 1995 In May, about 23,000 trout died from 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 are not recorded, the number of people killed by saltwater crocodiles is as high as 2000 every year. The crocodile attack that caused the most casualties occurred at the end of World War II, on the night of 1945+09-20 February. At that time, the allies who attacked Rangoon Island in Myanmar trapped 800- 1000 Japanese infantry in a swamp on the shore. By the next morning, only 20 Japanese soldiers had survived, and they were sure that most of the rest had been eaten raw by crocodiles. The most dangerous cats, tigers, attack people more frequently than other cats, perhaps because of the size of people's prey in tigers, and even for old or injured tigers, they are very easy to catch. The most powerful animal bite force-In the experiment conducted by the Marine Biology Laboratory in Bimini Islands, Bahamas, it was measured that the bite force between the upper and lower jaws of a 2-meter-long dark shark was 60 kg, which was 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 netted snake from the keeper of London Zoo in England is usually more than 6.25 meters in length. They can entangle their prey with their long bodies and eventually kill it. The fiercest fish-sawtooth fish attacks all injured animals or creates chaos in the water. It is reported that in 198 1 year, an overloaded ship capsized and sank while berthing in Obidos, Brazil, resulting in 300 people being eaten by sawtooth fish. The most shocking fish is the electric eel, which lives in the fresh water of Brazil and Guyana. It has two pairs of longitudinal organs and can emit 650 volts of electric shock. Its energy can light a light bulb or make adults unconscious. The venom in the glands of the most poisonous lizard, Gila monitor 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 one that poses the greatest threat to human beings is the mouse, which carries more than 20 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 cannot exceed the maximum dragonfly of 0.2m/s-distributed in South America. Length 12 cm, it is the largest dragonfly in the world. Mola is the largest fish in the world, which can lay more than 300 million eggs at a time. The heaviest insect is the beetle of Jinhua University of Science and Technology, which weighs between 70.9 and 99.2 grams and is the heaviest insect in the world. The fastest flying insect-Australian dragonfly, which can reach 58 kilometers per hour, is the fastest flying insect. Mbuti, the shortest ethnic group, is the shortest ethnic group with an average height of 1.35 meters. Tutsi, the tallest ethnic group, is the tallest ethnic group with an average height of1.83m.. The largest sea-Coral Sea, with an area of 479 square kilometers, is the largest sea in the world. The smallest sea Malakhei, with an area of only 1. 1 ,000 square meters, is the smallest sea in the world. The highest extinct volcano-Aconcagua Mountain is 6096 meters above sea level, which is the highest extinct volcano in the world. The shortest active volcano-Mount Tai is only 200 meters high, which is the shortest active volcano in the world. The longest-lived mammal-an elephant can live 180~200 years old, which is the longest-lived mammal in the world. The most poisonous animal-the golden mantis frog can kill 1500 people at once, and it is the most poisonous animal in the world. The heaviest egg-ostrich egg weighs 180 ~ 200g on average, which is the heaviest egg in the world. The smallest egg grass bird, only 0.36~0.37 grams, is the smallest egg in the world. The smallest spider-Spreading Spider, biologists once collected an adult male Spreading Spider in the West Samo Islands, with a body length of only 0.043 cm, which is not as big as the printed words. The smallest bird-the smallest bird in the world is a "miniature" hummingbird, weighing 2 grams and 5 centimeters from the tip of its mouth to the tip of its tail. The smallest mammal-a few years ago, a new competitor for the title of "smallest mammal" was found in the tropical jungle of Thailand-flying squirrel. It weighs about 2g, is 3cm long, has a head length of 1 1mm and a wingspan of 5.5cm It feeds on small insects. The longest-lived dog-This spring, the world's longest-lived "dog birthday star" died in Brisbane, Austria, at the age of 32, equivalent to living 224 years. A blue whale, the largest milk-producing mammal, can produce 430 liters of milk every day during lactation, which is five times that of the best cow. The most fragrant flower-generally considered to be the orchid called "Xiangzu". 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 Solanum lyratum-is the arrow lotus, also known as cactus flower. The flower with the most colors and varieties is the rose. There are tens of thousands of flowers in the world, including red, orange, white and purple, mixed color, cross color, silk color, multicolor and edging, as well as rare flowers that can change color most, such as blue and brown, which are rare varieties of carnation flowers. This kind of flower is white in the morning, rose at noon and purple at night-colored hibiscus flowers, which are white at first, light red the next day, dark red later and purple when they fall. According to "An Art Must Be Used" in Southern Song Dynasty, Qiongzhou produced a kind of "colored hibiscus", which was called "civil servant flower" because it was yellow on one day, reddish on the other, crimson on the fourth and even purplish. The most noble flower-peony is full of pride, and the most upright flower-plum blossom epiphyllum, which is brilliant for a while and moving for a 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 0/00 years, pumping 6 to 8 tons of blood every day, and pumping blood in three and a half years is enough to float a 10,000-ton ship. The world's smallest "radio station"-scientists have found that every cell in the human body is a miniature radio station, which can emit electric waves with a frequency of 150 K C, slightly lower than the radio frequency. The smallest "chemical plant" in the world-most of the metabolism of human body is chemical change. Under the management of hundreds of catalysts called "enzymes", chemical reactions are carried out in sequence according to a series of complicated procedures. Most of this is done in the smallest "chemical plant"-only 1.5 kg liver. The most primitive "engine" in the world-the lung is like an engine, which promotes the speed of human oxidative metabolism. When the chest cavity expands to the maximum, the lungs can hold 4.5 liters of air. The area of oxygen inhalation in the lung is 129027 cm2. The most peculiar "steel bar" in the world-the human body is completely supported by bones, and the bones are hollow, but there are many artistic and scientific 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 from Sumatra. The price per pound is as high as $300! Coffee is produced all over the world. It is well known that coffee produced in some areas is of high quality. Usually because of low yield and good taste, including Blue Mountain in Jamaica, Kona in Hawaii and Piberry in Tanzania. This kind of coffee is expensive because it is of high quality and rare. However, there is a kind of coffee that beats the so-called top coffee listed above with its unique taste, rarity and unique production technology. The name of this coffee is Luwak Coffee. The annual output is only about 500 Jin. Things are scarce, and the price of civet cats is $300 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 a part of Indonesia 13677 Islands. Luwak coffee is as expensive as gold and silver. It's not the infinite scenery on the fake island, but how it came about. On these islands in Indonesia, there is a kind of marsupial civet cat belonging to the genus Dendrolimus. Locals hate this kind of civets, because they often eat the ripest and reddest coffee fruits in coffee trees. I don't know who first thought that this animal could 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, similar to rubber tree, is produced in Morogo and bears olive-shaped fruit from which ARGAN oil can be squeezed. In Morogo, Berbers drive sheep to trees and let them eat the fruit from them. Then they collect sheep dung, remove sheep dung and squeeze the fruit from ARGAN oil. Glycerol can be used for massage, eating and aphrodisiac. It is speculated 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? It tastes very strong and caramel. Although coffee beans have some stale flavor and jungle aroma, roasted coffee beans have a very complex aroma. 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 730 meters, the deepest point 1620 meters, and the lake surface is 456 meters above sea level. The largest freshwater lake, Lake Superior, is 6 16 km long from east to west, 257 km wide from north to south and covers an area of 82,400 square kilometers. The coastline of the lake is 3000 kilometers long. The lowest lake is the Dead Sea, 400 meters below sea level. The Caspian Sea, the largest saltwater lake, is also the largest inland lake in the world. It is located in the vast and flat western Central Asia and the southeast end of Europe, and borders the Caucasus Mountains in the west. The whole sea area is long and narrow, with a length of about 1 0,200 kilometers from north to south and an average width of 320 kilometers from east to west. It covers an area of about 386,400 square kilometers, more than twice the sum of the five largest freshwater lakes in North America. The oldest tree-a pinecone named Matthew Chera in California, USA, is as old as 6400 years old; There is also a dragon's blood tree on Canary Island in western Africa, which has lived for more than 8,000 years. Unfortunately, it was destroyed by typhoon at 1868. The heaviest wood-Tielimu in Xishuangbanna, Yunnan, has a trunk as high as 30 meters, and the wood is hard, so it will not float on the water even if it is put into the water. The lightest wood-Bashamu from the United States and China, Yunnan and Guangxi, weighs only 0. 1 ton per cubic meter. The tallest tree, almond eucalyptus in Australia, is generally above 100 meters, and the tallest tree is 156 meters, which is equivalent to 50 floors, even higher than the two "Shanghai International Hotels". The shortest tree-dwarf willow is only 3 ~ 5 cm high. The thickest tree-a chestnut tree grows on Sicily, Italy, with a circumference of 56 meters. The Saltiest Tree-There is a kind of wood salt tree in Heilongjiang, China, whose salt content is similar to that of ordinary edible salt. The sweetest maple in North America contains 85% sugar. The hardest wood, Betula platyphylla from North Korea and northeast China, is 1 times harder than ordinary steel plate, and modern rifles can't do anything about it even at a short distance. The brightest tree-the magic tree of North America, you can see clearly the words smaller than the No.5 regular script under the tree at night. The most poisonous tree-the poison arrow tree in Xishuangbanna, Yunnan, China and Haikang, Hainan, that is, the blood-sealed throat tree, has white juice, but it is highly toxic, and it will kill if it sees blood. Only bamboo grass with red back can solve this poison. The most fire-resistant trees —— the sea pine in the South China Sea of China and the water bottle tree in South Africa, once a fire breaks out, the leaves are burned the most, and new leaves will grow in the next year, which will blossom and bear fruit normally. The most precious trees-Metasequoia glyptostroboides and Ginkgo biloba. Only Sichuan, Hubei, Hunan and Guangxi in China are found in the world. They are known as "rare living fossils in the world" and "plant pandas". The most noble tree-the first sandalwood tree. A biologist once said humorously: Sandalwood is a noble among nobles and a very beautiful tree. It will never be a "parasitic companion" or a faint fragrance. Therefore, it is often associated with Yang Jinfeng and Callicarpa. The slowest growing trees-Erwizga in Karachi, the former Soviet Union, and Chytka spruce in the Arctic forest belt, are only 28 cm high and 2.5 cm in diameter every hundred years. The fastest growing tree-an unnamed tree in Szabad, Malaysia-can grow 9.2 meters a year. The tree with the largest crown-a big banyan tree in Bangladesh, covers an area of 1 hectare, which is equivalent to half a football field and can accommodate about 7,000 people. The largest tea tree-a tea tree in Menghai, Yunnan, China, is 32 meters high, 2.98 meters thick in trunk, with leaves as long as 14 cm and 6 cm wide, and its age is about 1700 years. The oldest and largest chestnut tree, the Czech chestnut tree, has a trunk circumference of 700 cm and is over 500 years old. The oldest litchi tree-a litchi tree named "Song Jiaxiang" in Putian County, Fujian Province, China, has a trunk circumference of 7. 1 m and an age of 1200 years. The oldest olive tree-an olive tree along the Adriatic Sea in Yugoslavia, is as old as 2,400 years. The largest vine-a vine in England, England, with a shading area of over 460 square meters. The longest branch is more than 90 meters. The artificial hybrid pear in China Henan Shopping Mall, which has the largest variety, can produce 24 pears with different shapes, such as Sydney, Yueming pear, Laiyang pear and Condelli pear. The world's most poisonous octopus, the blue-ringed octopus, has the longest leg. Stuart Christon, a judge of Guinness World Records in the United States, confirmed that Russian Svetlana Pankratova has the longest leg in the world. Svetlana, a 36-year-old woman, was born in Volgograd, Russia, with a height of1.98m and a leg length of1.32m.. Svetlana made her American debut at the press conference held in Times Square, new york on June 5438+065438+1October 10, followed by a week-long celebration to break the Guinness World Record.