Desertification in sub-saharan africa is mainly caused by a) deserts. b) overgrazing. eliminate c) over-burning. d) intense heat.

Rational ignorance suggests that a. voters are ignorant on issues that are not of special interest to them b. voters do not pursue information about issues before voting c. low voter turnout is due to a lack of understanding of the platforms of each political party d. voters are uninterested in the electoral process