Population Geography

According to United Nations projections, by the year 2050, approximately two-thirds of the world’s population is expected to live in urban areas due to ongoing urbanization. This growth is expected as people move from rural to urban areas in search of better opportunities.
- Option (A) "One fourth" is incorrect as the estimate is much higher.
- Option (B) "Half" is also incorrect because the estimate is above 50%.
- Option (C) "Two third" is correct, as it reflects the projected urban population.
- Option (D) "Three fourth" is an overestimate, as the expected percentage is around two-thirds.
Thus, the correct answer is (C) Two third.

Natural Growth of Population:
Natural growth of population refers to the change in the population of a region due to the difference between the birth rate and the death rate. It is calculated as the difference between the number of births and the number of deaths in a given period, without accounting for migration. If the birth rate is higher than the death rate, the population increases, while a higher death rate leads to population decline. This process represents the natural increase or decrease in the population.
Impact of Migration on Changing Population:
Migration plays a significant role in shaping the population dynamics of a region. There are two main types of migration: immigration (movement into an area) and emigration (movement out of an area). The impact of migration on changing population includes:
- Population Growth in Receiving Areas: Countries or regions that receive large numbers of immigrants often experience an increase in population. This can lead to the development of urban areas, increased demand for resources, and diversification of the local culture and workforce.
- Population Decline in Sending Areas: Areas experiencing high levels of emigration may face a reduction in population, often affecting the workforce, especially if the migrants are young or skilled workers. This can lead to challenges in economic productivity and can exacerbate issues like aging populations.
- Cultural and Demographic Shifts: Migration can result in changes in the demographic structure, introducing new languages, religions, and cultural practices. It can also impact the labor market, with migrants contributing to both skilled and unskilled job sectors. Migration, therefore, is an important factor in the overall growth and distribution of populations, as it can influence both the size and structure of populations in various regions of the world.

Challenges Faced by India's Adolescent Population

India’s adolescent population faces various challenges that impact their social and economic development. These challenges include:

1. Educational Barriers: Access to quality education remains a challenge, especially for girls and children in rural areas.
2. Health Issues: Adolescent health concerns, such as malnutrition and lack of proper healthcare services, are widespread.
3. Social Pressures: Adolescents face immense academic pressure and social expectations, leading to stress and mental health issues.
4. Substance Abuse: Rising rates of substance abuse among adolescents are a growing concern in urban areas.
5. Child Marriage: Child marriage continues to be a significant issue in rural regions, affecting adolescent girls’ education and health.

India's Population Growth

India has witnessed significant population growth since 1921, driven by various socio-economic factors. Key stages of this growth include:

1. Early Growth (1921-1950): India’s population grew slowly due to high mortality rates and lower life expectancy during this period.
2. Post-Independence Growth (1950-1980): After independence, India’s population growth surged due to improved healthcare, nutrition, and sanitation.
3. Modern Growth (1980-Present): The population continued to grow rapidly, although the growth rate has slowed in recent decades due to family planning policies and urbanization.

Urbanization and Migration

A significant shift from rural to urban areas has contributed to increased population density in cities.