An incident that sparks a political transition is called a

Recurrent epidemics and widespread diarrhea, which kill millions of children each year, are often the result of __________

A) inadequate food supplies B) infection with hepatitis C) river blindness disease D) inadequate sanitation facilities

Demographic information on the US population comes from the decennial census and the ongoing American Community Survey (ACS). The primary mode of data collection used in both the census and ACS is

a. Telephone interview survey b Mail self-administered survey c. Household interview survey d. Group self-administered survey