11.   These suggest a new general theory, accounting for economic, religious and ideological groups as well as states and nations.

12.   Without an advocacy stage few general theories in biology would ever have arisen.

13.   Zoologist Eugene Morton has propounded a general theory of the vocal sounds that animals make.

14.   A number of general theories which have been used to account for such relationships are first described and evidence bearing on them is discussed.

15.   One general psychological theory of the intrinsic nature of indecent jokes is, however, of considerable relevance and practical value here.

16.   We shall not go into any of the general theory here.

17.   However, there are also quite different ways in which flows exhibit chaotic behaviour -- with the connection to the general theory of chaos being perhaps more definitely established.

18.   Such a description must certainly play a role in any general theory of linguistics.

19.   According to general theory, walking upright was the significant difference between apes and humans.

20.   But cruelly mocking unpaid workers and undelivered public services is not the way voters expect general political theories to be translated into the real world.