a) Use the data in the table below to answer the questions that follow: Population Country A 1,000 Births Deaths Immigrants Emigrants 15 Country B 10 80 3 0 20 20 Crude Birth Rate Crude Death Rate Crude Rate of Natural Increase 5 4 Population Growth Rate (%) 0.5 i. What is the crude birth rate (CBR) in country A? (3 marks) ii. Calculate the population growth rate in country A and country B and state which country has higher population growth rate. marks) b) Explain the theory of demographic transition. (5 (7 marks)