Relacionar Columnas DO YOU KNOW? cz.5Versión en línea Find answers to the questions by clicking the right boxes. por Monika Wójcik 1 Are camels born with humps? 2 How many colours can crocodiles distinct? 3 When were plastic bottles first used for soft drinks? 4 Can whales swim backwards? 5 How much water can an elephant's trunk hold? 6 When was the first English dictionary written? 7 Do horses and giraffes sleep standing up? 8 When was the tea bag invented? 9 Which animals are the only mammals that can fly? 10 When was the $ sign introduced? None. They are colour blind. bats No Yes in 1788 over 5 litres in 1755 No in 1908 in 1970