1. How can a change in lifestyle affect the amount of waste humans produce?

A change in lifestyle can affect the amount of waste humans produce? because:

The waste products can either increase or reduce

A change in lifestyle are any behaviors which are altered for certain reasons for a desired goal. Some examples of a change in lifestyle include:

A skinny guy working out at the gymA guy who sleeps four hours a night increases his sleep time to eight hoursA shift from dairy products to only beef, etc

As a result of these, we can see that with each lifestyle change, there is a shift in balance in the body system which will definitely affect the amount of waste products which a person produces.

This can either lead to a greater level of waste products or it would reduce the waste products.

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Answer commensalism

As someone who have lived in northern moravia at industrial steel and coal city of ostrava, the closest point is b), but it is questionable. i am not sure how to compare efficiency of largest steel mill in czech republic in comparison to china which is the biggest exporter, but czech steel factories were modernized and run more efficient that 25-35 years ago, and been privatized and owned by mittal. the workforce had been shrinking, so not exactly sure what that c is pointing to (aging of workforce, size of it, or quality). northern moravia is a part of larger coal basin that extend to poland with large coal deposits. this was foundation for the steel industry in the 1800's together with large ore deposits that was mined in proximity of the beskidy mountains less than 25 miles from ostrava. the iron ore mines had been depleted for several decades, and since the late 70's when communists run the country, they were already importing soviet iron ore. coal mining within city of ostrava cased to exist in the 1990's due environmental issues, and also cost. the mines were getting deeper and more costly to operate and there is no more mining within ostrava. couple mines are still in operation in karvina county which is next to ostrava. currently the coal deposits south of the city were not opened due environmental issue which would mean destruction of third largest mountain range in the country. therefore, my conclusion is is b, as the ore and coal resources been shrinking. the biggest challenge not mentioned here is of course competition from russia, ukraine, and china, which can produce steel much cheaper.