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--that the song of the birds is singular, and it serves for the identification of the pair,  of the young and of the neighbour?

--the apple belongs to the class of the roses ?

--only insects have true wings, the wings of birds are really modified legs ?

--the producer of the first Frankenstein movie was Thomas Edison ?

--that England’s Stonehenge is 1500 years older than the roman Colosseum ?

--that bats always fly towards left, when they leave their cave ?

--that amongst  the world’s national flags only Libia’s flag is single-colored. Green ?

--that in Australia there live twice as much cangaroos than people?

-- the biggest pumpkins may reach the mass of 500 kg, some of them may be of 670 kg ?

-- the world’s biggest crop is that of the jack-tree. The jack-fruits may be 90 cm long and have 35 kg.

--there are grown more red grapes worldwide, than white grapes.

-- that the lenght of a Boeing 474 plane’s wings is bigger than the distance the first plane made by the Wright-brothers was able to fly ?
--that the snow-cristals are always hexagonal?
-- that according to scientists the famous  bevelled tower of Pisa will collapse between 2010 and 2020?
--that the French eat the most cheese in the world?
-- that the height of the Eiffel-tower can change up to 15 cm-s depending on the weather?