Demographics Analyze demographic and environmental changes?

Demographic trends describe the changes in demographics in a population over time. For example, the average age of a population may increase over time. It may decrease as well. Certain restrictions...

yes, demographic change include financial change as demographic change includes educational change and change in health facilities and this can be happened if people have money.

families were significantly smaller, 3-4 people in a neuclear family. this is all i can find.

the audience of a particular media outlet.

demographic research is when something is done first hand i think.