How has age distribution changed in the last 10 years? what is different about qhere people live today, as opposed to the past? what new trend has appeared with regard to race and ethnicity? whatreends are projected for the future? what do these trends tell us about ways in which americans culture might change?

The age group that has decloned in 2010-2020 consensus is the 25-44 age group, and the segment 45-64 hs risen faslty. People today live mosly in urban areas, which are more populated and polluted and this has decreased the health of the people, beacuse of various reasons.
Race and ethnicity are being intermixed due to migration of people from one country to another and inetr-racial marriages. 
In the future, more races will be merged, and this will cause America to become a mixed population, and no one wil remain as a dominating population. American culture will surely change, because these racial changes causes native cultures to be changed or modified according to one's own comfort.