What are the advantages and disadvantages of a population pyramid, and how is the dependency ratio calculated?

Please provide the table with the blank spaces for part a) i) and the population data for part b) i). Without this information, I cannot complete those calculations or construct the population pyramid. I will answer the conceptual parts of the question: a) iii) One advantage and one demerit of using a population pyramid: • Advantage: A population pyramid provides a clear visual representation of the age and sex structure of a population, allowing for easy identification of demographic trends such as birth rates, death rates, and the impact of historical events. • Demerit: It only displays age and sex distribution and does not provide information on other crucial demographic factors like income, education levels, or specific causes of population change (e.g., migration patterns not directly reflected in age structure). b) ii) The actual dependency ratio might be higher than the result obtained from the formula because: • The formula assumes all individuals within the working-age group (20-59) are economically productive, which is often not the case due to unemployment, disability, or individuals pursuing higher education. • Conversely, some individuals outside the defined dependent age groups (0-19 and 60+), such as older teenagers or young adults, might be economically active, while some within the working-age group might be dependents (e.g., stay-at-home parents not in the labor force). c) iii) Immigration can influence the dependency ratio by: • Decreasing the ratio: If immigrants are predominantly of working age (e.g., 20-59 years old), they increase the economically active population (denominator) without significantly increasing the dependent population (numerator), thereby lowering the dependency ratio. • Increasing the ratio: If immigrants arrive with a large number of young children or elderly dependents, or if the immigrants themselves are elderly, they could increase the dependent population, potentially raising the dependency ratio. However, the most common effect of economic immigration is a reduction in the dependency ratio. c) iv) Two problems associated with a youthful population and two measures to overcome them: • Problem 1: Strain on social services. A large youthful population places significant demand on public services such as education (schools, teachers) and healthcare (pediatric services). • Measure 1: Increase government investment in expanding educational infrastructure, training more teachers, and improving healthcare facilities to meet the growing needs of the young population. • Problem 2: High youth unemployment. As a large cohort of young people enters the labor market, there may not be enough jobs available, leading to high rates of unemployment and underemployment among youth. • Measure 2: Implement policies that promote job creation, encourage entrepreneurship, and provide vocational training and skills development programs tailored to market demands to enhance youth employability. Send me the next one 📸