Please help me answer these in an essay form. Thank you.

2. Explain the concept of urban bias. What policies are associated with it, and what are their likely effects on urban and rural areas? 3. Describe briefly the essential assumptions and major features of the Todaro model of rural-urban migration. 4. What reasons would you give for the rather sizable school dropout rates in developing countries? What . might be done to lower these rates? 5. What are the differences between formal and nonformal education? Give some examples of each. 6. Why are health and education so closely linked in the development challenge? 7. What are the most pressing health and education challenges today? What makes them so difficult to solve