{"id":29368,"date":"2026-04-11T09:48:50","date_gmt":"2026-04-11T02:48:50","guid":{"rendered":"https:\/\/i-clc.edu.vn\/?p=29368"},"modified":"2026-04-11T09:48:50","modified_gmt":"2026-04-11T02:48:50","slug":"khoa-hoc-song-ngu-noi-dang-so-nhat-tren-the-gioi-dao-ran-brazil","status":"publish","type":"post","link":"https:\/\/i-clc.edu.vn\/en\/kien-thuc-toan-khoa-hoc-song-ngu\/khoa-hoc-song-ngu-noi-dang-so-nhat-tren-the-gioi-dao-ran-brazil\/","title":{"rendered":"Khoa h\u1ecdc song ng\u1eef: N\u01a1i \u0111\u00e1ng s\u1ee3 nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi &#8211; \u0110\u1ea3o r\u1eafn Brazil"},"content":{"rendered":"<p><span style=\"font-weight: 400\">R\u1eafn h\u1ed5 l\u1ee5c \u0111\u1ea7u gi\u00e1o v\u00e0ng \u00f3ng (golden lancehead viper) l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i r\u1eafn \u0111\u1ed9c nh\u1ea5t th\u1ebf gi\u1edbi. \u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 ch\u00fang ch\u1ec9 t\u1ed3n t\u1ea1i duy nh\u1ea5t tr\u00ean h\u00f2n \u0111\u1ea3o Ilha de Queimada Grande &#8211; c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi c\u00e1i t\u00ean \u0111\u00e1ng s\u1ee3 \u201c\u0110\u1ea3o R\u1eafn\u201d, n\u1eb1m c\u00e1ch b\u1edd bi\u1ec3n Sao Paulo<\/span> <span style=\"font-weight: 400\">thu\u1ed9c Brazil kho\u1ea3ng 32 km.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">The golden lancehead viper is one of the most venomous snakes in the world. What makes it particularly fascinating is that it exists exclusively on Ilha de Queimada Grande &#8211; also known as the infamous \u201cSnake Island\u201d\u2014located about 32 km off the coast of Sao Paulo, Brazil.<\/span><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-1.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-29371 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-1-300x198.jpg\" alt=\"\" width=\"871\" height=\"575\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-1-300x198.jpg 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-1-18x12.jpg 18w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-1.jpg 650w\" sizes=\"(max-width: 871px) 100vw, 871px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Lo\u00e0i r\u1eafn n\u00e0y \u0111\u01b0\u1ee3c cho l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p t\u1eed vong do r\u1eafn c\u1eafn \u1edf Brazil, cho th\u1ea5y m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m \u0111\u00e1ng k\u1ec3 c\u1ee7a n\u00f3.<\/span><\/p>\n<p><span style=\"font-weight: 400\">This species is believed to be responsible for the majority of snakebite-related deaths in Brazil, highlighting its significant level of danger.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Theo nghi\u00ean c\u1ee9u c\u1ee7a nh\u00e0 sinh v\u1eadt h\u1ecdc Ludwig Trutnau, t\u1ef7 l\u1ec7 t\u1eed vong khi b\u1ecb lo\u00e0i r\u1eafn n\u00e0y c\u1eafn c\u00f3 th\u1ec3 l\u00ean t\u1edbi 7% n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u tr\u1ecb, v\u00e0 gi\u1ea3m xu\u1ed1ng kho\u1ea3ng 3% khi \u0111\u01b0\u1ee3c can thi\u1ec7p y t\u1ebf k\u1ecbp th\u1eddi.<\/span><\/p>\n<p><span style=\"font-weight: 400\">According to research by biologist Ludwig Trutnau, the mortality rate from its bite can reach up to 7% without treatment, and drops to around 3% with timely medical intervention.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Khi b\u1ecb c\u1eafn, n\u1ecdc \u0111\u1ed9c c\u1ee7a r\u1eafn g\u00e2y ra h\u00e0ng lo\u1ea1t ph\u1ea3n \u1ee9ng nghi\u00eam tr\u1ecdng trong c\u01a1 th\u1ec3. Ban \u0111\u1ea7u c\u00f3 th\u1ec3 l\u00e0 s\u01b0ng ph\u00f9, \u0111au d\u1eef d\u1ed9i t\u1ea1i ch\u1ed7, sau \u0111\u00f3 nhanh ch\u00f3ng ti\u1ebfn tri\u1ec3n th\u00e0nh bu\u1ed3n n\u00f4n, n\u00f4n m\u1eeda, t\u1ee5 m\u00e1u v\u00e0 xu\u1ea5t huy\u1ebft. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u1eb7ng, n\u1ea1n nh\u00e2n c\u00f3 th\u1ec3 g\u1eb7p ch\u1ea3y m\u00e1u n\u1ed9i t\u1ea1ng, suy th\u1eadn, xu\u1ea5t huy\u1ebft n\u00e3o, th\u1eadm ch\u00ed ho\u1ea1i t\u1eed c\u01a1 nghi\u00eam tr\u1ecdng, \u0111e d\u1ecda tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u00ednh m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-weight: 400\">When bitten, the snake\u2019s venom triggers a series of severe reactions in the body. Initial symptoms may include swelling and intense localized pain, which can quickly progress to nausea, vomiting, bruising, and bleeding. In more serious cases, victims may experience internal bleeding, kidney failure, cerebral hemorrhage, and even severe muscle necrosis, all of which can be life-threatening.<\/span><\/p>\n<p><span style=\"font-weight: 400\">R\u1eafn h\u1ed5 l\u1ee5c \u0111\u1ea7u gi\u00e1o v\u00e0ng l\u00e0 lo\u00e0i c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00f4ng qu\u00e1 l\u1edbn nh\u01b0ng l\u1ea1i v\u00f4 c\u00f9ng \u0111\u00e1ng s\u1ee3. M\u1ed9t c\u00e1 th\u1ec3 tr\u01b0\u1edfng th\u00e0nh th\u01b0\u1eddng d\u00e0i kho\u1ea3ng 70cm, v\u00e0 trong \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi h\u01a1n 1 m\u00e9t (kho\u1ea3ng 118 cm).<\/span><\/p>\n<p><span style=\"font-weight: 400\">The golden lancehead viper is not particularly large in size, yet it is extremely formidable. An adult typically measures around 70 cm in length, and under ideal conditions, it can grow to over 1 meter (approximately 118 cm).<\/span><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-2.jpg\"><img decoding=\"async\" class=\"wp-image-29370 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-2-300x191.jpg\" alt=\"\" width=\"827\" height=\"527\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-2-300x191.jpg 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-2-18x12.jpg 18w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-2.jpg 700w\" sizes=\"(max-width: 827px) 100vw, 827px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">C\u01a1 th\u1ec3 c\u1ee7a ch\u00fang mang s\u1eafc v\u00e0ng n\u00e2u nh\u1ea1t \u0111\u1eb7c tr\u01b0ng, ph\u1ee7 b\u1edfi nh\u1eefng hoa v\u0103n h\u00ecnh tam gi\u00e1c ho\u1eb7c t\u1ee9 gi\u00e1c ch\u1ea1y d\u1ecdc s\u1ed1ng l\u01b0ng. C\u00e1c hoa v\u0103n n\u00e0y c\u00f3 th\u1ec3 c\u00f3 k\u00edch th\u01b0\u1edbc thay \u0111\u1ed5i, c\u00f3 th\u1ec3 ri\u00eang bi\u1ec7t ho\u1eb7c k\u1ebft n\u1ed1i v\u1edbi nhau, t\u1ea1o ra m\u1ed9t l\u1edbp ng\u1ee5y trang c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3 trong m\u00f4i tr\u01b0\u1eddng xung quanh. Ph\u1ea7n \u0111\u1ea7u c\u1ee7a ch\u00fang n\u1ed5i b\u1eadt v\u1edbi hai \u0111\u01b0\u1eddng s\u1ecdc r\u00f5 r\u1ec7t ph\u00eda sau m\u1eaft, trong khi ph\u1ea7n b\u1ee5ng l\u1ea1i mang m\u00e0u kem nh\u1ea1t. \u0110\u1eb7c bi\u1ec7t, khi s\u1ed1ng trong \u0111i\u1ec1u ki\u1ec7n nu\u00f4i nh\u1ed1t, m\u00e0u s\u1eafc c\u1ee7a ch\u00fang th\u01b0\u1eddng tr\u1edf n\u00ean t\u1ed1i h\u01a1n, c\u00f3 th\u1ec3 l\u00e0 do s\u1ef1 thay \u0111\u1ed5i trong kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh th\u00e2n nhi\u1ec7t.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Their bodies display a distinctive light yellowish-brown coloration, marked with triangular or quadrilateral patterns running along the length of the back. These markings may vary in size and can appear either separate or connected, forming highly effective camouflage in their natural surroundings. The head is characterized by two distinct stripes behind the eyes, while the underside is a pale cream color. Notably, in captivity, their coloration often becomes darker, possibly due to changes in their ability to regulate body temperature.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Kh\u00f4ng ch\u1ec9 nguy hi\u1ec3m v\u00ec n\u1ecdc \u0111\u1ed9c, lo\u00e0i r\u1eafn n\u00e0y c\u00f2n g\u00e2y \u00e1m \u1ea3nh b\u1edfi m\u1eadt \u0111\u1ed9 xu\u1ea5t hi\u1ec7n d\u00e0y \u0111\u1eb7c \u0111\u1ebfn kh\u00f3 tin. Theo th\u1ed1ng k\u00ea \u1edf \u0111\u00e2y, c\u1ee9 1m2 c\u00f3 t\u1edbi 5 con r\u1eafn h\u1ed5 l\u1ee5c \u0111\u1ea7u gi\u00e1o. Nh\u01b0ng d\u00f9 s\u1ed1 l\u01b0\u1ee3ng r\u1eafn c\u00f3 \u00edt h\u01a1n th\u00ec b\u1ea1n c\u0169ng kh\u00f3 tr\u00e1nh kh\u1ecfi c\u00e1i ch\u1ebft khi \u0111i qu\u00e1 3 b\u01b0\u1edbc ch\u00e2n. Nguy\u00ean nh\u00e2n khi\u1ebfn lo\u00e0i r\u1eafn n\u00e0y tr\u1edf n\u00ean nguy hi\u1ec3m nh\u01b0 v\u1eady v\u1eabn c\u00f2n l\u00e0 m\u1ed9t \u0111i\u1ec1u ch\u01b0a \u0111\u01b0\u1ee3c l\u00fd gi\u1ea3i.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Not only is this species dangerous because of its venom, but it is also alarming due to its incredibly dense population. Reports suggest that there can be up to five golden lancehead vipers per square meter. Even at lower densities, taking just a few steps could still put you at serious risk. The reasons behind the extreme danger of this species remain not fully understood.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u0110i\u1ec1u khi\u1ebfn gi\u1edbi khoa h\u1ecdc v\u1eabn c\u00f2n b\u0103n kho\u0103n l\u00e0: v\u00ec sao lo\u00e0i r\u1eafn n\u00e0y l\u1ea1i ph\u00e1t tri\u1ec3n v\u1edbi m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m \u0111\u1ebfn v\u1eady? Cho \u0111\u1ebfn nay, c\u00e2u tr\u1ea3 l\u1eddi v\u1eabn ch\u01b0a ho\u00e0n to\u00e0n r\u00f5 r\u00e0ng, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng lo\u00e0i sinh v\u1eadt b\u00ed \u1ea9n v\u00e0 \u0111\u00e1ng s\u1ee3 nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi.<\/span><\/p>\n<p><span style=\"font-weight: 400\">What continues to puzzle scientists is why this species has evolved to be so extraordinarily dangerous. To this day, the answer remains unclear, making it one of the most mysterious and fearsome creatures in the world.<\/span><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-3.webp\"><img decoding=\"async\" class=\"wp-image-29373 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-3-300x202.webp\" alt=\"\" width=\"865\" height=\"582\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-3-300x202.webp 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-3-18x12.webp 18w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-3.webp 460w\" sizes=\"(max-width: 865px) 100vw, 865px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">M\u1ed9t trong nh\u1eefng gi\u1ea3 thuy\u1ebft \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 khoa h\u1ecdc \u0111\u1ed3ng thu\u1eadn cho r\u1eb1ng, c\u00e1ch \u0111\u00e2y kho\u1ea3ng 11.000 n\u0103m, m\u1ef1c n\u01b0\u1edbc bi\u1ec3n d\u00e2ng cao \u0111\u00e3 t\u00e1ch h\u00f2n \u0111\u1ea3o Ilha de Queimada Grande ra kh\u1ecfi \u0111\u1ea5t li\u1ec1n Brazil. M\u00f4i tr\u01b0\u1eddng c\u00f4 l\u1eadp n\u00e0y \u0111\u00e3 bu\u1ed9c c\u00e1c sinh v\u1eadt tr\u00ean \u0111\u1ea3o, \u0111\u1eb7c bi\u1ec7t l\u00e0 lo\u00e0i r\u1eafn h\u1ed5 l\u1ee5c \u0111\u1ea7u gi\u00e1o v\u00e0ng, ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 s\u1ed1ng trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t v\u00e0 ngu\u1ed3n cung c\u1ea5p th\u1ee9c \u0103n c\u1ef1c k\u1ef3 h\u1ea1n h\u1eb9p &#8211; ch\u1ee7 y\u1ebfu g\u1ed3m c\u00e1c lo\u00e0i chim di tr\u00fa.<\/span><\/p>\n<p><span style=\"font-weight: 400\">One widely accepted hypothesis suggests that around 11,000 years ago, rising sea levels separated Ilha de Queimada Grande from mainland Brazil. This isolation forced the island\u2019s wildlife &#8211; especially the golden lancehead viper &#8211; to adapt to harsh conditions and an extremely limited food supply, consisting mainly of migratory birds.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Trong t\u1ef1 nhi\u00ean, n\u1ecdc \u0111\u1ed9c c\u1ee7a nhi\u1ec1u lo\u00e0i r\u1eafn th\u01b0\u1eddng c\u1ea7n m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 ph\u00e1t huy t\u00e1c d\u1ee5ng, \u0111\u00f4i khi k\u00e9o d\u00e0i \u0111\u1ebfn v\u00e0i gi\u1edd ho\u1eb7c th\u1eadm ch\u00ed v\u00e0i ng\u00e0y. \u0110i\u1ec1u n\u00e0y tr\u1edf th\u00e0nh m\u1ed9t b\u1ea5t l\u1ee3i l\u1edbn \u0111\u1ed1i v\u1edbi nh\u1eefng con r\u1eafn tr\u00ean \u0111\u1ea3o: khi con m\u1ed3i (chim) b\u1ecb tr\u00fang \u0111\u1ed9c, ch\u00fang ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 bay \u0111i v\u00e0 bi\u1ebfn m\u1ea5t tr\u01b0\u1edbc khi ch\u1ebft.<\/span><\/p>\n<p><span style=\"font-weight: 400\">In the wild, the venom of many snake species typically takes time to take effect &#8211; sometimes several hours or even days. This becomes a major disadvantage for the snakes on the island: once envenomated, their prey (birds) can still fly away and disappear before succumbing to the venom.<\/span><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-29372 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-4-300x225.jpg\" alt=\"\" width=\"847\" height=\"636\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-4-300x225.jpg 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-4-16x12.jpg 16w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-4.jpg 660w\" sizes=\"(max-width: 847px) 100vw, 847px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Ch\u00ednh \u00e1p l\u1ef1c sinh t\u1ed3n n\u00e0y \u0111\u00e3 th\u00fac \u0111\u1ea9y m\u1ed9t qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a \u0111\u1eb7c bi\u1ec7t. Qua h\u00e0ng ngh\u00ecn n\u0103m, r\u1eafn h\u1ed5 l\u1ee5c \u0111\u1ea7u gi\u00e1o v\u00e0ng \u0111\u00e3 ph\u00e1t tri\u1ec3n lo\u1ea1i n\u1ecdc \u0111\u1ed9c c\u1ef1c m\u1ea1nh, c\u00f3 kh\u1ea3 n\u0103ng h\u1ea1 g\u1ee5c con m\u1ed3i g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c. Nh\u1edd \u0111\u00f3, ch\u00fang kh\u00f4ng c\u00f2n ph\u1ea3i \u201c\u0111\u00e1nh m\u1ea5t\u201d ngu\u1ed3n th\u1ee9c \u0103n qu\u00fd gi\u00e1 c\u1ee7a m\u00ecnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t n\u01a1i h\u00f2n \u0111\u1ea3o bi\u1ec7t l\u1eadp n\u00e0y.<\/span><\/p>\n<p><span style=\"font-weight: 400\">This intense survival pressure has driven a remarkable evolutionary process. Over thousands of years, the golden lancehead viper has developed extremely potent venom capable of incapacitating its prey almost instantly. As a result, it no longer risks losing such precious food sources in the harsh, isolated environment of the island.<\/span><\/p>\n<p><span style=\"font-weight: 400\">N\u1ecdc \u0111\u1ed9c c\u1ee7a l\u0169 r\u1eafn tr\u00ean \u0111\u1ea3o n\u00e0y c\u00f3 uy l\u1ef1c g\u1ea5p 5 l\u1ea7n n\u1ecdc \u0111\u1ed9c c\u1ee7a nh\u1eefng lo\u00e0i r\u1eafn kh\u00e1c v\u00e0 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 l\u00e0m tan ch\u1ea3y da ng\u01b0\u1eddi. Tr\u01b0\u1edbc khi \u0111\u1ea3o b\u1ecb c\u1ea5m gh\u00e9 th\u0103m \u0111\u00e3 c\u00f3 r\u1ea5t nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p l\u00e0 n\u1ea1n nh\u00e2n c\u1ee7a lo\u00e0i b\u00f2 s\u00e1t \u0111\u00e1ng s\u1ee3 n\u00e0y.<\/span><\/p>\n<p><span style=\"font-weight: 400\">The venom of the snakes on this island is estimated to be up to five times more potent than that of other snake species, and it can even cause severe tissue destruction in humans. Before the island was closed to visitors, there were numerous cases of people falling victim to these terrifying reptiles.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Do lo\u00e0i r\u1eafn n\u00e0y ch\u1ec9 sinh s\u1ed1ng \u1edf n\u01a1i kh\u00f4ng c\u00f3 con ng\u01b0\u1eddi n\u00ean nh\u1eefng b\u00e1o c\u00e1o v\u1ec1 vi\u1ec7c con ng\u01b0\u1eddi b\u1ecb ch\u00fang c\u1eafn d\u01b0\u1eddng nh\u01b0 l\u00e0 r\u1ea5t hi\u1ebfm. Tuy nhi\u00ean, r\u1eafn \u0111\u1ea7u gi\u00e1o n\u00f3i chung v\u1eabn b\u1ecb cho l\u00e0 nguy\u00ean nh\u00e2n d\u1eabn t\u1edbi s\u1ef1 nhi\u1ec5m \u0111\u1ed9c v\u00e0 t\u1eed vong do r\u1eafn c\u1eafn \u1edf khu v\u1ef1c B\u1eafc v\u00e0 Nam Phi.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Because this species lives exclusively in areas without human presence, documented cases of human envenomation are extremely rare. However, lancehead vipers as a group are widely regarded as a significant cause of snakebite-related poisoning and fatalities in parts of Central and South America.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Trong su\u1ed1t nhi\u1ec1u n\u0103m, ch\u1ec9 c\u00f3 m\u1ed9t ng\u01b0\u1eddi g\u00e1c \u0111\u00e8n s\u1ed1ng trong khu v\u1ef1c c\u1ee7a h\u00f2n \u0111\u1ea3o. Ch\u00ednh ph\u1ee7 Brazil \u0111\u00e3 ra l\u1ec7nh c\u1ea5m m\u1ecdi c\u00f4ng d\u00e2n c\u1ee7a m\u00ecnh \u0111\u1ebfn th\u0103m \u0111\u1ea3o n\u00e0y v\u00ec n\u1ed7i lo v\u1ec1 kh\u1ea3 n\u0103ng r\u1eafn t\u1ea5n c\u00f4ng. Ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 \u00edt nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u1eb7t ch\u00e2n l\u00ean \u0111\u1ea3o cho m\u1ee5c \u0111\u00edch kh\u1ea3o s\u00e1t khoa h\u1ecdc.<\/span><\/p>\n<p><span style=\"font-weight: 400\">For many years, the only human presence on the island was a lighthouse keeper. The Brazilian government has since banned all public access due to the danger of snake attacks. Today, only a small number of researchers are permitted to set foot on the island for scientific purposes.<\/span><\/p>\n<p><a href=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-29369 aligncenter\" src=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-5-300x150.jpg\" alt=\"\" width=\"899\" height=\"450\" srcset=\"https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-5-300x150.jpg 300w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-5-18x9.jpg 18w, https:\/\/i-clc.edu.vn\/wp-content\/uploads\/2026\/04\/dao-ran-5.jpg 628w\" sizes=\"(max-width: 899px) 100vw, 899px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">M\u1eb7c d\u00f9 h\u00f2n \u0111\u1ea3o n\u00e0y b\u1ecb c\u1ea5m l\u1ea1i g\u1ea7n, song c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e2u chuy\u1ec7n \u0111\u1ed3n th\u1ed5i xung quanh \u0111\u00f3. T\u01b0\u01a1ng truy\u1ec1n r\u1eb1ng nh\u1eefng ng\u01b0\u1eddi sinh s\u1ed1ng tr\u00ean \u0111\u1ea3o v\u00e0 c\u1ea3 nh\u1eefng ai \u0111i l\u1ea1c \u0111\u1ebfn h\u00f2n \u0111\u1ea3o n\u00e0y \u0111\u1ec1u kh\u00f4ng th\u1ec3 tr\u1edf v\u1ec1.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Although the island is strictly off-limits, many rumors and legends still surround it. It is often said that those who once lived on the island &#8211; or anyone who accidentally set foot there &#8211; never made it back.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Trong h\u01a1n hai th\u1eadp k\u1ef7 qua, t\u1ef7 l\u1ec7 r\u1eafn tr\u00ean \u0111\u1ea3o \u0111\u00e3 suy gi\u1ea3m 15%\u00a0 b\u1edfi b\u1ec7nh t\u1eadt v\u00e0 s\u1ef1 bi\u1ebfn chuy\u1ec3n c\u1ee7a h\u1ec7 sinh th\u00e1i th\u1ef1c v\u1eadt. Theo Hi\u1ec7p h\u1ed9i B\u1ea3o t\u1ed3n Thi\u00ean nhi\u00ean Qu\u1ed1c t\u1ebf, nhi\u1ec1u lo\u00e0i r\u1eafn \u1edf \u0111\u00e2y hi\u1ec7n n\u1eb1m trong danh s\u00e1ch \u0111\u1ecf.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Over the past two decades, the snake population on the island has declined by about 15% due to disease and changes in the plant ecosystem. According to the International Union for Conservation of Nature, many of the snake species there are now listed on the Red List.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b>LANGUAGE CENTER INTERCONTINENTAL (I-CLC)<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400\">CN TP.HCM: 64 \u0110\u01b0\u1eddng 85, Ph\u01b0\u1eddng T\u00e2n H\u01b0ng, TP. HCM<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><span style=\"font-weight: 400\">CN Nha Trang: Plot no. 12, Road B2, Urban Area, Vinh Diem Trung, Vinh Hiep, ho chi minh City, Nha Trang<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><span style=\"font-weight: 400\"> 0917729932<\/span><\/p>\n<p><span style=\"font-weight: 400\">#ICLC #tienganhtreem #khoahoc #kienthucsongngu<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>R\u1eafn h\u1ed5 l\u1ee5c \u0111\u1ea7u gi\u00e1o v\u00e0ng \u00f3ng (golden lancehead viper) l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i r\u1eafn \u0111\u1ed9c nh\u1ea5t th\u1ebf gi\u1edbi. \u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 ch\u00fang ch\u1ec9 t\u1ed3n t\u1ea1i duy nh\u1ea5t tr\u00ean h\u00f2n \u0111\u1ea3o Ilha de Queimada Grande &#8211; c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi c\u00e1i t\u00ean \u0111\u00e1ng s\u1ee3 \u201c\u0110\u1ea3o R\u1eafn\u201d, n\u1eb1m c\u00e1ch b\u1edd bi\u1ec3n Sao Paulo &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/i-clc.edu.vn\/en\/kien-thuc-toan-khoa-hoc-song-ngu\/khoa-hoc-song-ngu-noi-dang-so-nhat-tren-the-gioi-dao-ran-brazil\/\"> <span class=\"screen-reader-text\">Khoa h\u1ecdc song ng\u1eef: N\u01a1i \u0111\u00e1ng s\u1ee3 nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi &#8211; \u0110\u1ea3o r\u1eafn Brazil<\/span> Read More &raquo;<\/a><\/p>","protected":false},"author":430,"featured_media":29374,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[188],"tags":[],"class_list":["post-29368","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc-toan-khoa-hoc-song-ngu"],"acf":[],"_links":{"self":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/29368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/users\/430"}],"replies":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=29368"}],"version-history":[{"count":2,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/29368\/revisions"}],"predecessor-version":[{"id":29376,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/posts\/29368\/revisions\/29376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/media\/29374"}],"wp:attachment":[{"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=29368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=29368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-clc.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=29368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}