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| Man |
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| Worst than any other living or non-living thing upon the Earth, man has taken the world for granted. They spread pollution worse the flies, snatch away lands from other animals and resale lands to each other as if they inherited those lands from nature. |
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| Fatal Familial Insomnia |
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| It is a disease of sleeplessness that is present only 28 families worldwide. No cure has been found for this disease yet. In this disease, patients suffer from complete sleeplessness of periods ranging from 7months to 3 years until they finally die. |
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| Kariba Weed |
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| The Kariba weed (Salvinia molesta) is a weed growing originally in Brazil. The weed floats on water and grows very fast, getting twice its size in a matter of days. As a result, they cover the entire water body and prevent sunlight from entering the water at all. The weed can neither be killed as it branches out vigorously if cut into pieces. |
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| Mosquito |
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| Often regarded as the worst insect of the world, the mosquitoes are the force behind spreading malaria. The main career of malaria is the female mosquito. The male is rather harmless as compared to the females. |
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| Botulinum toxin |
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| It is the most harmful protein known to human kind. The bacterium Clostridium botulinum is the source of this deadly toxin. It is said that this protein is so harmful that merely 1kg is enough to wipe out all the humans on earth. Even then, this harmful toxin is present in Botox injections, taken to remove wrinkles. |
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| 6 |
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| Bullet Ant |
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| It is a species of ant found in Paraguay. The sting of these ants can cause throbbing and completely overwhelming pain for nearly a day. The ants make their home in large groups near the bottom of trees. |
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| Corpse Flower |
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| Rain forests of Sumatra are the original home of corpse flowers. The flower is huge in size, sometimes growing as wide as 10 feet. Its colour resembles reddish rotten meat. Its tip has human body temperature. What’s worse, the flower emits a foul smell similar to a rotten corpse. That is why this flower has such a nasty name. |
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