Final answer:
Reducing the amount of solid waste by using less is known as source reduction. Municipal solid waste includes everyday items discarded by the public but not industrial or hazardous wastes. Source reduction is the most effective strategy for waste management, while MSW can sometimes be used to generate energy.
Step-by-step explanation:
The concept of reducing the amount of solid waste generated by using less is known as source reduction. This is one of the most effective ways to address waste-related environmental issues. In contrast, municipal solid waste (MSW) includes everyday items discarded by the public, which do not typically include industrial or hazardous wastes.
When it comes to burning sawdust left over from lumber production to generate electricity, this is an example of creating energy from waste materials. Although not traditionally included under MSW when considering household garbage, the concept is similar in that it's converting waste into usable energy. The methods for managing MSW can have varying environmental impacts, and some, like incineration, require stringent regulations to mitigate harm.
In conclusion, source reduction is the term that describes the act of minimizing the creation of waste, and MSW is a term that describes the waste needing to be managed, which can sometimes be used to generate energy.