1. "9 Billion?" a. In a bullet point or two, how would you characterize the trends in global population growth? b. What single factor accounts for much of the population growth in the last 50 years? c. Which region of the world has the highest fertility rate? d. What are the two most important determinants of fertility rate? e. In a bullet point or two, what are the trends in life expectancy? What are their likely economic consequences? f. What are the consequences of demographic changes for developed countries? for developing countries