Questions - Please answer the following 3 questions:

1. Urban-based societies generally produce vast amounts of waste and in much greater quantities than they have in the past - what are some of the fundamental reasons for current high levels of waste production?

2. Describe the waste management hierarchy and how it is useful in waste management planning? What are some of the problems with this scheme?

3. Many people argue that waste management systems should be 'integrated' and 'sustainable', but what does this actually mean?

Each questions should be answered comprehensively (that is aim for complete coverage), as well as explicitly (that is it should remain focused on the question at hand and directly answer the question).