At 02:47:08 on Mon, 2 Jan 2006, niels.ellegaard@gmail.com wrote in
<1136198828.126315.190770@g44g2000cwa.googlegroups.com>:
>A friend of mine is writing a physics article. She has been examining a
>series of (physical) systems, and found that these systems do not
[quoted text clipped - 3 lines]
>
>The systems show a variety of behaviors.
Both sentences use the American spelling "behavior", whereas you are
asking in a group which focusses on UK English, in which we use the
spelling "behaviour". However, if the rest of the article is in US
English spelling, it is best to remain consistent.
I would recommend the second version, since each behaviour is individual
to the relevant system. "A variety of behaviour" would be more likely
to refer to one system (or, indeed, person) exhibiting a range of
different behaviour at different times. Presumably each system is
consistent in its own behaviour, so the plural is the best choice.

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