Jason is actively trying to remember his teammates' names, so he writes down the numbers from their jerseys and the position they play on the team, along with the first letter of their names. He is using the numbers as cues to help his memory for the names of his teammates.

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; acquired mainly during early childhood;