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.
Xia /xia/ [2 sylls.] as a name for girls is of Greek derivation, and the meaning of the name Xia is guest, stranger. Xia is a version of Xenia (Greek).Compare surname Xie. Kreatif forms: Xiaxe, Xiaxy, Xyxia.ia /xia/ [2 sylls.] as a name for girls is of Greek derivation, and the meaning of the name Xia is guest, stranger. Xia is a version of Xenia (Greek). Compare surname Xie. Kreatif forms: Xiaxe, Xiaxy, Xyxia.