11.   The plan involves construction of new sewage treatment plants, the closure of polluting factories, changes in farming practices and graduated pricing of water.

12.   The plan involves construction of new sewage-treatment plants, the closing of polluting factories, changes in farming practices and graduated pricing of water.

13.   They have also transformed farming practices around the world.

14.   As farm groups gathered on the National Mall to mark their own version of Earth Day, lawmakers focused on how farming practices can help prevent global warming.

15.   For many organic farmers, philosophy, lifestyle, politics and conservation principles are inextricably intertwined with farming practices.

16.   Jennifer Marohasy, spokeswoman for the Queensland Cane Growers, says the industry has greatly reduced the chemicals and sediment lost into the sea by implementing conservation farming practices.