Mixtures fuels solvents paints and dusts are all considered to be

Mixtures fuels solvents paints and dusts are all considered to be Hazardous Materials. Hazardous and toxic materials are those chemicals that may be present in a workplace and have a capacity to cause harm.

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;