21.   The problem has become exacerbated since German unification.

22.   The problem is exacerbated by the fact that many of the mines are now within built-up areas.

23.   This problem is exacerbated by the uncertainty as to the meaning of deals as a consumer created by recent case law.

24.   And faster-than-expected export growth has exacerbated the problem, they also say.

25.   Antonov blames alcohol and drug abuse, long-term problems newly exacerbated by stress.

26.   As a result, pilots react in a way that actually exacerbates the problem, rather than corrects it.

27.   Banks have become favored targets of the Russian mafia, and the problem has been exacerbated by a reluctant Yeltsin government.

28.   Because agriculture accounts for more than two-thirds of water demand, the water supply problem is exacerbated by the growing need for food.

29.   A nationwide drought, caused by the El Nino weather pattern, exacerbated the problem.