1.   The emphasis now is on recycling waste.

2.   The emphasis now is on recycling household waste.

3.   Cameron Mclatchie, chairman of the British Polythene Industries, said that the emphasis on recycling household waste was unrealistic.

4.   Animals in a space station would compete with the astronauts for oxygen, food and territory and add to the already onerous task of recycling digestive waste.

5.   By recycling garden wastes, we avoid sending useful materials to the landfill and we use a lot fewer plastic bags.

6.   Micro-organisms are responsible for recycling natural wastes.