The author's description of the conditions in which most immigrants traveled best helps readers understand why passengers were checked so carefully for contagious illnesses.
what immigrants were willing to tolerate in order to come to the United
States.
why immigrants wanted to leave their homelands behind to come to
the United States.
why many immigrants had to go through Ellis Island in order to enter
the United States.

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; ///relational devaluation;

answer; passive listening;

answer; speaker;