1.   Declining productivity levels and environmental degradation have caused a widespread exodus of people to centres of economic activity.

2.   Environmental degradation is a genuine case of passing the muck.

3.   Environmental degradation, whether resulting from pollution or from overuse of natural resources, does not respect the boundaries of states.

4.   Had this acknowledgement been made, both a high birth-rate and environmental degradation would appear symptoms of a wider malaise.

5.   In a few short but intense years we began to atone for centuries of environmental degradation.

6.   It would wipe out farm profits, undermine rural employment and cause environmental degradation in East Anglia, he says.

7.   Questions of peace and war, global distributive justice, gender and racial inequality, and environmental degradation concern us all.

8.   Regional geochemical maps provide information on background levels of metals against which environmental degradation can be monitored.

9.   These problems include those associated with rural poverty, malnutrition, population changes and environmental degradation in developing nations.