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Fatal Frogs
Across South America one can find a variety of frog unlike (0) ___those/any____found in Europe. Apart (16) _______being different colours, such as yellow and blue, these frogs are poisonous. Some of them are (17) ________ poisonous that even touching (18) _______ can be fatal. The Embera Choco people of Colombia have (19) ________ using toxins from frogs for many years in (20) ________ to hunt. However, since the arrival of other types of weapons in the rainforest, the .art of making dart guns (21) __________ started to disappear. However, it is still possible to find craftsmen making dart guns (22) _________ the trunks of palm trees. The actual dart is covered (23) __________ poison from the frog’s skin. The poison will remain strong (24) ______ to kill animals for more (25) a year. About 55 of the 135 species of South American frogs are toxic. The frogs are brightly coloured to warn predators not to touch them. Some species of frogs produce toxins (26) _________may be useful for mankind as painkillers. A number of species are (27) ________bred by researchers in the States to investigate the possibility of using toxins for (28) ________benefit. By licking the frog’s skin scientists (29) _______judge the level of toxins. There is no danger of being poisoned, though, as frogs in captivity gradually become (30) _______poisonous.
Fatal Frogs
Across South America one can find a variety of frog unlike (0) ___those/any____found in Europe. Apart (16) _______being different colours, such as yellow and blue, these frogs are poisonous. Some of them are (17) ________ poisonous that even touching (18) _______ can be fatal. The Embera Choco people of Colombia have (19) ________ using toxins from frogs for many years in (20) ________ to hunt. However, since the arrival of other types of weapons in the rainforest, the .art of making dart guns (21) __________ started to disappear. However, it is still possible to find craftsmen making dart guns (22) _________ the trunks of palm trees. The actual dart is covered (23) __________ poison from the frog’s skin. The poison will remain strong (24) ______ to kill animals for more (25) a year. About 55 of the 135 species of South American frogs are toxic. The frogs are brightly coloured to warn predators not to touch them. Some species of frogs produce toxins (26) _________may be useful for mankind as painkillers. A number of species are (27) ________bred by researchers in the States to investigate the possibility of using toxins for (28) ________benefit. By licking the frog’s skin scientists (29) _______judge the level of toxins. There is no danger of being poisoned, though, as frogs in captivity gradually become (30) _______poisonous.
