Q1. Spiny species of diatoms are found both in warm subtropical waters in addition to in colder areas. Since warm water is less dense than cold water, would you predict any differences between the spines of warm-water and cold-water individuals? Why?

Q2. Assume worker productivity increased at the rate of 1.9 percent per year. If the labor force grew by 1.5 percent per year, what rate of increase in RGDP would be sustainable without increasing inflation pressures?