Explain what the four varnas are. Which types of people make up the highest level? Which are in the lowest of the four? PLS HELP M

Brahmins, Kshatriyas, Vaishya, and Shudras

Highest: Brahmins ( Priests, gurus, teachers)

Lowest: Shudra.

Explanation:

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.