Wind and solar energy are considered to be _________ .
a. renewable energy sources
b. practical energy sources
c. compliance energy sources
d. man-made energy sources
e. None of the above
Question 2
Depressions and recessions occur
a. only in times when there is no competition among businesses.
b. during periods of overproduction and underemployment
c. only when labor insists on higher wages.
d. when welfare expenditures exceed 10 of the GNP.