28. which is not a category of sexually transmitted disease
a. viral
b. bacterial
c. contagious
d. parasitic

What did you guys think of the super bowl yesterday? ?

Used primarily for thickening sauces and soups, a (paste/roux/stock) is made from a (1: 2/2: 1/1: 1) fat and flour.

If birth rates fall below the replacement level, then a country is in which stage of demographic transition? a. urbanization/industrialization b. mature industrial c. postindustrial d. pre-modern