When barack obama was a presidential candidate, he argued that racial prejudice is one of america’s defining social problems. he was implicitly acknowledging that: ?

answer; (you have the right of way);

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.