Looking for a little help on the following:Chapter 3 – Questions for Review (Q2-Q5) – Page 76From Economic Growth 3rd Edition1. What is the evidence in favor of the theory that differences in...

Looking for a little help on the following:Chapter 3 – Questions for Review (Q2-Q5) – Page 76From Economic Growth 3rd Edition1. What is the evidence in favor of the theory that differences in income among countries are the result of differences in investment rates? What is the evidence against this theory?2. What is the effect of an increase in the investment rate on the level of steady-state output per worker in the Solow model? What is the effect of an increase in the investment rate on the growth rate of output per worker in the model?3. How does the issue of whether saving rates are endogenous or exogenous affect our interpretation of how well the Solow model explains income differences among countries?4. Why can a country not grow forever solely by accumulating more capital?