Recency is a measure of how long it’s been since a specific user visited your website. for example, since the sales cycle for an ink cartridge is very short, you should not serve ads to them after 30 minutes. if a user searches online for a replacement, how much are you willing to pay for an ad each minute leading to a conversion?

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.

u idek                                                                                                                                               /

answer; randomization;