1.   It is not unusual to find that countries adopt the best parts of both strategies in order to tackle air pollution problems.

2.   Once you have cured the water pollution problem, you will have to take steps to avoid it happening again.

3.   The agency has promised action on the pollution problem for years, but nothing has happened.

4.   The agreement has been hailed as the first of a series intended to tackle the chronic industrial pollution problems of eastern Germany.

5.   Ten countries in the vicinity of the Black Sea have signed a convention for combating the pollution problems facing the sea.

6.   Oil spills from the nearby tanker routes, coupled with stormwater run-off, are the main causes of a growing marine pollution problem.

7.   Ho Chi Minh City in Vietnam has held a clean and green week to highlight its worsening pollution problems.

8.   It was a good example of how employees can contribute to solving pollution problems.

9.   Although organizations like Heal the Bay have increased awareness of the pollution problem, things still find their way into the sewers.

10.   American officials say pollution problems along the border are especially daunting because the solution often lies on the other side, in Mexico.