81.   Pre-emptive analgesia has, indeed, been said to have been shown to occur in several clinical studies.

82.   Precisely similar effects occur in the large strain torsion of a rubber.

83.   Price competition Price competition occurs in mature Markets, much of it induced by clients.

84.   Probably because of the very much greater stick forces and lower rates of pitch occurring in most light aircraft.

85.   Psychobiologists want to explain behaviour in terms of physiological events occurring in the brain and the body.

86.   Radial cleavage is clear and straight forward and occurs in sea-urchins, amphibians, and some invertebrates.

87.   Sleep is associated with certain brain waves that only occur in a warmed animal.

88.   Some private sector occupational schemes are generous towards widows, especially if the death occurs in service.