In the UK, a significant proportion of children have not only experienced drinking alcohol by the time they are allowed to purchase an alcoholic beverage (i.e. before 18 years of age), but are likely to have been drunk at least once in the last 4 weeks.
btw. âº 1  written abbreviation for by the way: used, for example in emails, when you are writing something that relates to the subject you are discussing, but is not the main point of the discussion: âº 2  written abbreviation for by the way: used in an email, etc. to add an extra comment, piece of information, or question:
A BTU is a measurement of thermal energy where one BTU is equal to the amount of energy needed to raise the temperature of 1 pound of water by 1Â° Fahrenheit. Even small space heaters can produce thousands of BTUs. A central air conditioner, which uses hundreds of thousands of BTUs. BTU, short for British thermal unit, is a basic measure of thermal (heat) energy. One BTU is the amount of energy needed to raise the temperature of 1 pound (0.45 kg) of water by 1Â° Fahrenheit (0.55Â° Celsius).