a short supply of is the demand is high such as with petroleum countries have to rely on other nations that may have an overabundance of that resource

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; they are called (pebbling);

answer; acquired mainly during early childhood;