I think waste should be separated or segregated because of some reasons. The first reason is it is legally required. Under the Waste Regulation 2011, you must segregate paper, cardboard, plastic, metal and glass at source. Waste segregation is included in law because it is much easier to recycle. Effective segregation of wastes means that less waste goes to landfill which makes it cheaper and better for people and the environment. It is also important to segregate for publid health. In particular, hazardous wastes can cause long term health problems, so it is very important that they are disposed of correctly and safely and not mixed. Segregated waste is also often cheaper to dispose of because it does not require as much manual or mechanical sorting as mixed waste. There are a number of important reasons that we encourage waste segregation, legal obligations, cost savings and protection of human health and the environment.3A. What is the topic of the text above?​