Discuss how most Librarian earn their living ?

Librarians help people find information and conduct research for personal and professional use. Librarians work for local governments, companies, and elementary, secondary and postsecondary schools.

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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.