At the core of biology and other sciences lies a problem-solving approach called the scientific method. 1  Make an observation. 2  Ask a question. 3  Form a hypothesis, or testable explanation. 4  Make a prediction based on the hypothesis.  Test the prediction.
Xi. Xi is the 14th letter of the Greek alphabet. It is pronounced in Modern Greek, and generally or in English. In the system of Greek numerals, it has a value of 60. Xi was derived from the Phoenician letter samekh. Xi is not to be confused with the letter chi, which gave its form to the Latin letter X.
á¼ÏÎ or á¼ÏÎ± if followed by a consonant is a particle for introducing a new idea that follows an earlier one. Sort of like âThenâ¦â or âsoâ¦â in English. á¼ÏÏÏá¾·Ï = âyou askâ itâs second person verb, the âyouâ is implied by the ending. In this case it could also be translated as âyou may askâ¦â but thatâs a quirk of this particular verb, usually I xxxx and I may xxxx are differentiated by slightly different endings.