Hostile Witness. A witness at a trial who is so adverse to the party that called him or her that he or she can be cross-examined as though called to testify by the opposing party. The Federal Rules of Evidence provide that witnesses who are hostile, or adverse, can be interrogated through the use of leading questions. hostile witness
Polar wander. Polar wander is the motion of a pole in relation to a fixed reference frame. It can be used, for example, to measure the degree to which Earth's magnetic poles have been observed to move relative to the Earth's rotation axis.
Best Answer: Solvents can be broadly classified into two categories: polar and non-polar. Generally, the dielectric constant of the solvent provides a rough measure of a solvent's polarity.s a rule of thumb, polar solvents dissolve polar compounds best and non-polar solvents dissolve non-polar compounds best: like dissolves like. please check this site: http://usm.maine.edu/~newton/Chy251_253/Lectures/Solvents/Solvents.html.