Oliguria or hypouresis (both names from roots meaning not enough urine) is the low output of urine. In humans, it is clinically classified as an output more than 80 ml/day but less than 400ml/day.
The alternative is to take US Dollars with you, and then change your money in Colombia, but if you do want to take cash then it's probably easiest to just buy Colombian pesos in the UK and take them. The alternative is to rely on using your bank card to withdraw money in Colombia. There is a decent network of cash machines in Colombia and they take most UK bank cards so there shouldn't be a problem with this, but many people do prefer to take a pre-paid currency card instead.
U.S. Currency Federal Reserve. Minus the pictures on coins minted in Ecuador, money used in the country will be very familiar to U.S. citizens and anyone who has seen the U.S. dollar. The U.S. dollar has been the currency used in Ecuador since September, 2000. Dollar bills are identical in design to those used in the U.S. but on some âEcuadorianâ coins the presidential images are of Ecuadorian leaders not past U.S. Presidents.