Para- or Peri- : Similar Sound, Different Meaning What is the Difference Between Perimeter and Parameter? Writers in English often get words spelled incorrectly because the vowels in English often do not get an accent so that it is hard to tell the difference in everyday speech. This is notably the case in words that have the roots or prefixes of peri- and -para-. Peri- is a Greek prefix. That means that it will normally be associated with roots from the Greek language. (There may be some exceptions, but that will be the rule). It means around or about.. For example, the word perimeter literally means measurement around.. And that pretty well describes what a perimeter is.
The Institute of Medicine has determined how much water the average man or woman needs to drink to be healthy: Men -- The average man should drink 3.7 liters or 15 cups of water per day. Women -- The average woman should drink 2.7 liters or 11 cups of water per day. That's a lot more than the 8 cups that you're used to drinking! The good news is that you don't need to get all of your water just by drinking! The recommendations above is for total water intake, which means liquid in all of its forms.
The advice to drink at least two liters of water every day seems to be a piece of common knowledge that everyone knows, isn't backed up by studies, as far as I can tell. My own theory is that sailors discovered by trial and error that they needed a gallon of water daily to remain in good health.oodstuffs that have high moisture contents also contribute to our water supply. With our food we absorb about 1 litre of water a day. Our total required amount of water is 2,5 litres a day. If we drink enough water and eat enough water-containing food, this should not be a problem.