How many times a super Volcano can be More than a regular volcano
don't mind the subject.

Eruptions take place about every 50,000 years in supervolcanos, which suggests there is one overdue, which isn't nice to think about.  The typical number of individual eruptions per year is around 60-80. See the difference? And the subject is alright! I don't mind!

paul revere would be your answer : )

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.