Q.(a) “Broadly 90 percent of the world population lives in about 10 percent of its land area.” Examine the statement in context of patterns of population distribution in the world.

Population distribution across the globe is significantly influenced by environmental factors, which in turn dictate the types of economic activities people can pursue. One of the oldest forms of human economic activity is subsistence gathering, where people collect wild plants and hunt wild animals directly from their natural environment to meet their basic needs for food, shelter, and clothing, rather than for commercial sale or trade. This practice is typically characterized by low levels of technology, small population densities, and often a nomadic or semi-nomadic lifestyle.

The term "low latitudes" refers to the geographical zones generally located between the Tropic of Cancer ($23.5^\circ$ North) and the Tropic of Capricorn ($23.5^\circ$ South). These regions are characterized by tropical climates, which typically feature high temperatures, abundant rainfall, and dense vegetation, such as tropical rainforests. Such environments are rich in biodiversity, offering a wide variety of plants and animals that can sustain human populations through gathering and hunting.

Let's examine the given options:

• (A) Northern Canada: This region lies in high latitudes, characterized by Arctic and sub-Arctic climates. While indigenous communities here historically practiced and continue to practice subsistence activities like hunting and fishing, it is not a low latitudes zone. The environment is dominated by tundra and boreal forests, which are very different from tropical ecosystems.
• (B) Northern Eurasia: Similar to Northern Canada, this encompasses vast areas of Siberia and Arctic Russia, which are high latitude regions. The climate is extremely cold, with extensive taiga (boreal forest) and tundra biomes. Subsistence activities here are adapted to cold environments and are not characteristic of low latitudes. …

Migration, the movement of people from one place to another with the intention of settling, is a fundamental aspect of human history and geography. This movement is rarely random; it is driven by a complex interplay of factors that either compel people to leave their homes or attract them to new destinations. These are broadly categorised as 'push' and 'pull' factors. Understanding these factors is crucial for comprehending migration patterns and their societal impacts.

Push factors are the negative conditions or circumstances that force or encourage people to leave their place of origin. They are essentially the disadvantages of a particular area that make staying undesirable. These factors 'push' people away from their homes.

Common examples of push factors include:

• Economic hardship: Lack of employment opportunities, low wages, poverty, or economic stagnation.
• Political instability: War, conflict, persecution, lack of political freedom, or oppressive regimes.
• Environmental degradation: Natural disasters like floods or droughts, famine, resource scarcity, or unfavourable climate conditions.
• Social issues: Discrimination, lack of safety, poor public services, or limited educational opportunities.

Pull factors, on the other hand, are the attractive conditions or opportunities that draw people to a new location. These are the advantages of a destination that make it desirable for migrants. These factors 'pull' people towards a new place.

Common examples of pull factors include:

• Economic opportunities: Availability of jobs, higher wages, better living standards, or prospects for economic growth.
• Political stability: Peace, safety, freedom, and good governance.
• Favourable environment: Pleasant climate, fertile land, or abundant natural resources.
• Social benefits: Access to better education, healthcare, social services, or a supportive community.

Now, let us analyse the given factors in the context of push and pull:

• I. Peace and stability: This refers to a condition where there is an absence of conflict and a predictable, secure environment. Such conditions are highly desirable and attract people seeking safety and a better quality of life. Therefore, peace and stability act as a pull factor. …

Rural-urban migration refers to the movement of people from rural areas to urban centers. A "demographic consequence" specifically refers to an impact on the characteristics of a population, such as its size, growth rate, age structure, sex ratio, birth rates, or death rates. It's about changes in the composition and distribution of people.

Let's analyze each option to determine which one is a direct demographic consequence:

1. Understanding Migration Patterns:

   In India, and many other developing countries, rural-urban migration is often selective. Typically, young adults, particularly males, migrate from rural areas to urban centers in search of better economic opportunities, education, or services. This selective movement has distinct impacts on the populations at both the origin (rural areas) and the destination (urban areas).

2. Analyzing Option (A): Pressure on infrastructure at the place of destination

   When people migrate to cities, the urban population increases. This larger population requires more housing, transportation, water, sanitation, and other public services. The strain on these resources is a significant social and economic challenge for urban planning and governance. While it is caused by an increase in population (a demographic change), the "pressure on infrastructure" itself is a consequence related to resource management and social services, not a direct change in the population's demographic structure (like age or sex composition).

3. Analyzing Option (B): Shortage of labour at the place of origin

   As young, able-bodied individuals leave rural areas, the available workforce for agriculture and other rural occupations diminishes. This leads to a shortage of labour, particularly during peak seasons. This is a significant economic consequence for the rural economy. While it results from the demographic change of out-migration of working-age individuals, the "shortage of labour" itself describes an economic condition in the labour market, not a direct change in the population's demographic structure.

4. Analyzing Option (C): Imbalance in age and sex

   Important

   This is a direct demographic consequence. It describes a fundamental change in the composition of the population.

   This is a direct demographic consequence. When young males predominantly migrate from rural areas to urban areas:

   • At the place of origin (rural areas): There is a higher proportion of children, elderly people, and women left behind. This skews the age structure towards dependents and the sex ratio towards females. …