the ethnic composition of the united states is expected to change considerably by the year 2050 what is the reason for this
a immigration
b different ethnic groups ted to have different birth rates
c the national death rate is increasing
d a and b
d) a and b
Immigration and different ethnic groups tending to have different birth rates are both significant factors contributing to the changing ethnic composition of the United States by 2050. Increased immigration from countries with diverse populations is leading to a more multicultural society, while some ethnic groups within the US have higher birth rates than others, leading to shifts in population demographics.