At what age is a child likely to learn to sit up without support? one day one month five months nine months

Around 5 months

(At least that how long it took my baby brother to learn)

d.) continue to rise rapidly

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.