To begin organizing yourself to accomplish all your tasks, you need to
a. complete each tasks you have in order of importance
b. transfer all your jobs into action word tasks
c. finish all of your two minute tasks quickly
d. write down all the jobs for which you are responsible

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.