Population Growth

The direct answer is B: net migration is positive. Natural increase equals births minus deaths. Since births and deaths are equal, natural increase is zero. However, immigration means people enter the area. If immigration is greater than any out-migration, net migration becomes positive, and this adds people to the existing population. Thus total population can increase even though natural increase is not positive. Option A is wrong because equal births and deaths produce zero natural increase. Option C is the opposite of the given condition and would create natural decrease. Option D is wrong because an increase in land area does not itself add residents. Memory cue: total change = births − deaths + immigration − emigration; balanced births and deaths do not cancel migration.

The direct answer is A: employment pressure and migration. When the number of people grows faster than the number of available jobs, competition for work increases. Some people may remain unemployed or underemployed, while others may move to places offering better opportunities. This creates pressure on livelihoods and can increase migration. Option B is wrong because population growth does not automatically double the physical area of a place. Option C is wrong because slow job growth does not make the birth rate zero. Option D is unrelated; death rates can still be measured. The result is described as “may occur” because actual outcomes also depend on skills, investment, public policy, and movement of workers. Memory cue: more workers than jobs can mean unemployment pressure and migration.

Direct answer: Option A is correct. A fair comparison of decadal growth requires data that measure the same kind of change over the same ten-year period. First, check that both areas are being compared for ten years, not five years versus ten years. Next, check that population definitions, administrative boundaries, census methods and units are comparable. Only then can we compare the absolute increase or the percentage growth rate meaningfully. Option B is wrong because unequal time periods can make one area appear to grow more simply because it was measured for longer. Option C is wrong because hearing totals is not a reliable method and gives no verified time basis. Option D is wrong because migration can strongly change population totals and should be considered when relevant. Memory cue: same time, same meaning, then compare growth.

Direct answer: Option B is correct. Population growth means a change in the number of people over time; it may be slow, moderate or rapid. Population explosion is a much faster and unusually large increase that can create serious pressure on food, housing, water, employment, education, health services and other resources when supply does not keep pace. Therefore, every population explosion is a form of population growth, but every kind of growth is not an explosion. Option A is wrong because normal or slow growth need not create explosive pressure. Option C is wrong because growth is not only the death rate; it is affected by births, deaths and migration. Option D is wrong because an explosion specifically refers to a sharp increase in population. Memory cue: growth is the broad idea; explosion is exceptionally rapid growth with strong pressure.

Direct answer: Option A is correct. A large young population means that many children and young adults will need education, health care, skill development and later access to suitable work. Planning should therefore estimate how many classrooms, teachers, training centres, health facilities and employment opportunities will be required. If these needs are met, young people can become a productive workforce and contribute to social and economic development. Option B is wrong because mountain height does not provide education, training or jobs. Option C is wrong because memorising river names does not meet the practical needs of a youthful population. Option D is wrong because colouring an area on a map does not create services or employment. A useful memory cue is: young population means prepare for learning, skills, health and work.

Direct answer: Option A is correct. Birth rate tells us how many babies are born, while life expectancy indicates the average length of life people may live under existing conditions. If fewer children are born and people live longer, children form a smaller share of the total population while older people survive for more years. Over the long run, the proportion of elderly people may therefore increase, producing an ageing population. Option B is wrong because a lower birth rate does not turn all people into children; it usually reduces the proportion of children. Option C is wrong because population changes gradually and does not become zero immediately. Option D is wrong because migration is influenced by economic, social, political and environmental factors and does not automatically stop. Memory cue: fewer births plus longer lives usually means an older age structure.

Direct answer: Option A is correct. Administrative services have limited capacity at a given time. If the district population rises rapidly while the number or capacity of schools, hospitals, water systems, roads, sanitation facilities and officials remains unchanged, more people must depend on the same facilities. This can cause overcrowded schools and hospitals, longer waiting times, water or housing shortages, heavier traffic and reduced service quality. The central planning problem is a mismatch between rising demand and unchanged supply. Option B is wrong because a larger population generally needs more services, not fewer. Option C is wrong because a lack of service expansion does not automatically reduce population. Option D is wrong because population growth does not change the district’s physical area into zero. Memory cue: more people plus the same capacity means greater pressure.

Direct answer: Option A is correct. Per-person, or per-capita, availability is found by dividing the available amount of a resource by the number of people sharing it. If the total resource remains fixed while population increases, the same amount must be divided among more people, so the amount available to each person can decrease. For example, a fixed water supply shared by a larger population gives a smaller share per person, assuming other conditions remain the same. Option B would generally increase per-person availability because resources are growing faster than population. Option C also points toward greater availability per person because population falls while resources rise. Option D does not describe a populated situation for sharing resources. Memory cue: fixed total divided among more people means a smaller per-person share.

Correct answer: A. A rights-based approach respects people’s dignity, freedom, health and ability to make informed choices. Education gives people knowledge about health and family planning. Accessible health services provide safe advice and care. Voluntary family planning allows couples to decide freely and responsibly, without force. Women’s empowerment improves education, decision-making and control over personal choices. Option B is wrong because forced displacement violates rights and is not a respectful population measure. Option C is wrong because closing health services harms people and removes essential support. Option D is wrong because hiding information prevents informed decisions. Memory cue: rights-based means informed choice, voluntary action and equal access—not force or punishment.

Correct answer: A. Urban population changes through natural increase and migration. Natural increase occurs when births exceed deaths among people living in the city. Migration adds people when they move into the city from villages, towns or other regions. If both processes occur together, the number of urban residents can rise considerably. Option B is wrong because urbanisation means a growing share of people living in urban areas; it does not make population zero. Option C is wrong because cities can grow in many physical settings, not only mountains. Option D is wrong because rural-to-urban migration is an important part of urbanisation. Memory cue: urban population change = natural increase + net migration.

Correct answer: A. Urban sprawl is the outward expansion of built-up areas from a city into nearby rural or less-developed land. Population growth can increase the need for houses, roads, schools and other facilities. When land inside the city is limited or costly, construction and settlement may move towards the outskirts. Option B is wrong because an empty city does not create outward housing pressure. Option C is wrong because zero housing demand cannot cause expansion. Option D is wrong because a complete return to villages would reduce pressure on the city rather than spread it outward. The link is not automatic in every place; planning, transport and land prices also influence sprawl. Memory cue: more people plus outward land demand can produce sprawl.

Correct answer: A, 800. Solve in two steps. First find natural increase: births − deaths = 3,000 − 1,800 = 1,200. Next find net migration: in-migrants − out-migrants = 700 − 1,100 = −400, meaning 400 more people left than entered. Total growth = natural increase + net migration = 1,200 + (−400) = 800. Option B is only the natural increase and ignores migration. Option C incorrectly combines the figures and does not subtract out-migrants. Option D adds all births, deaths and migration figures without considering that deaths and out-migration reduce population. Memory cue: total growth = (births − deaths) + (in-migration − out-migration).

Correct answer: D. Absolute increase depends on both the percentage rate and the base population. For example, 2% of 100,000 is 2,000, while 2% of 1,000 is only 20. Therefore, the same percentage does not always add the same number of people. Option A is correct because a small rate applied to a very large population can produce a large numerical increase. Option B is correct because absolute increase means the actual difference between two population totals. Option C is correct because a rate expresses change in percentage terms and helps compare populations of different sizes. Option D is wrong because it ignores the base. Memory cue: percentage tells the proportion; the base tells the number added.

Correct answer: A. Food security means that people can regularly obtain sufficient, safe and nutritious food. As population grows, the number of people needing food increases, so total demand may rise. If production, storage, transport or distribution does not keep pace, food may not reach all people equally, even when food exists in some places. Option A clearly shows both parts of the relationship: greater demand and weak distribution. Option B removes the population that needs food. Option C describes falling demand and improving resources, not a clear pressure caused by growth. Option D is unrealistic because people need food. Memory cue: food security depends on availability, access and reliable distribution, not population size alone.

Correct answer: A. More people generally produce more household waste, sewage and other discarded material. If collection, treatment, recycling and safe disposal do not expand with the population, waste can accumulate and increase pressure on water, air and land. Option A is carefully worded with “can,” because the result also depends on consumption patterns and the quality of management. Option B is wrong because population growth does not make waste zero. Option C is wrong because population affects the quantity of waste and the capacity needed to manage it. Option D is wrong because pollution has many causes, including waste, fuel use, industry and poor treatment; mountain height alone cannot decide it. Memory cue: more people require more effective environmental services.

Correct answer: A. A growth rate is a percentage calculated from a base population. A high percentage applied to a very small base may add only a modest number of people. If water, housing, health and other services already have enough capacity, immediate pressure can remain low. Option B is wrong because a large base means that even a rate may represent many additional people, and weak services would increase pressure. Option C is wrong because closed services create serious pressure rather than low pressure. Option D is wrong because zero water and housing represent severe shortage. The situation may change later if growth continues. Memory cue: always consider rate, base size and service capacity together.

The direct answer is A. When the birth rate remains low and people live longer, elderly people can form a larger share of the total population. This changes the type of services that planners must provide. Older people may need accessible health care, regular medical support, social security, pensions, suitable housing, safe public transport and community care. First, a low birth rate means fewer children are added to the population. Second, a high life expectancy means more people survive to older ages. Together, these conditions can increase the relative importance of the elderly group, even if the total population is not growing rapidly. Option A is correct because it links both relevant demographic conditions. Option B is not the best answer because a very high birth rate generally increases the share of children, while a very short life expectancy reduces the number reaching old age. Option C is impossible in the stated situation and would require no elderly services. Option D is incorrect because migration does not remove the need to plan for an ageing population. Memory cue: low births plus longer lives means greater ageing-related planning.

The direct answer is A. Population growth changes not only the total number of people but often the age structure as well. Planners should estimate how many young people will soon enter the working-age group. They can then arrange schooling, vocational training, career guidance, transport, workplaces and suitable employment opportunities. The reasoning is step by step: births in earlier years create an age group; that group eventually reaches working age; its size affects the future supply of workers; employment planning must respond to that expected supply. Option A is correct because it connects demographic information with practical labour-market planning. Option B is wrong because rainfall may influence some occupations, especially agriculture, but it cannot by itself determine the number or type of jobs required. Option C is wrong because birth rate measures births in relation to population, while area measures land. Option D is wrong because migration can change the number, age and skills of workers in a region. Memory cue: population planning asks who will work, how many will work and what skills they need.

The direct answer is A. Population growth describes how the size of a population changes during a period. This change can result from births, deaths and migration, so it is not simply a count of births. Sex ratio is a composition measure showing the number of females per 1,000 males in the convention used here. Thus, growth asks, “How is the total population changing over time?” while sex ratio asks, “What is the balance between females and males?” Option A gives both definitions correctly. Option B reverses the two ideas: male-female comparison is related to sex ratio, not population growth, and total-population change is growth, not sex ratio. Option C is wrong because growth also involves deaths and migration, while sex ratio is not a death rate. Option D again reverses the definitions and wrongly calls sex ratio population density. Memory cue: growth means change through time; sex ratio means composition by sex.

The direct answer is A. A growth-rate comparison is meaningful only when the figures are comparable. First check that the data cover the same length and dates of time. Next check that the same population definition, area and method has been used. If figures from different periods or different definitions are compared directly, the difference may reflect the method or time span rather than a real difference in growth. Therefore, option A describes a data error. Option B is a sound practice because the same period and definition improve comparability. Option C is also correct practice: percentage growth and absolute numerical increase answer different questions and should not be confused. Option D is important because a small population can show a high percentage increase even when its numerical increase is small, while a large population can add many people with a lower percentage rate. Memory cue: before comparing rates, check the year, definition, area and base population.

The direct answer is A. Housing planning depends on comparing the number of people or households needing homes with the supply and capacity of available housing. Step one: population growth can create additional households or increase the number of people seeking accommodation. Step two: if construction and housing services do not keep pace, demand becomes greater than supply. Step three: this imbalance may produce shortages, overcrowding, higher rents or pressure on informal settlements, depending on local conditions. Option A is correct because it states this demand-supply relationship without claiming that the result is automatic everywhere. Option B is wrong because existing housing does not expand merely because the population grows; new land, finance, infrastructure and construction are needed. Option C is wrong because more people generally create additional housing needs. Option D is too absolute and reverses the likely pressure: a falling population does not necessarily increase shortage and may reduce demand. Memory cue: compare housing demand with housing supply, not population size alone.

The direct answer is A. Water is needed by households, farms, schools, hospitals and industries. When population grows, the number of users and often the total demand for water can increase. If the available sources are limited, unmanaged growth can place pressure on supply. Planning is therefore needed to estimate demand, protect water sources, reduce wastage, store water where appropriate, distribute it fairly and encourage safe reuse or conservation. The exact situation differs between regions, so growth does not automatically create the same level of shortage everywhere; the key is the relationship between rising demand and available supply. Option A is correct because it identifies why rapid growth and limited sources make planning more important. Option B is wrong because more people do not make water demand zero. Option C is wrong because population affects the number of users. Option D is wrong because natural water sources are not made unlimited by population growth. Memory cue: more users plus limited supply requires better management.

The direct answer is A. Population change has more than one component. Natural increase is calculated from births minus deaths. Net migration is the balance between people entering and people leaving. A simple relationship is: population change = natural increase + net migration. Suppose births are greater than deaths, so natural increase is positive. If many young people leave the rural area for towns or cities and the number leaving is greater than this natural increase, net migration becomes sufficiently negative to pull total population change below zero. Therefore, the rural population can decline even while local births exceed local deaths. Option A states exactly this condition. Option B is wrong because high in-migration adds people and generally raises population. Option C is wrong because zero out-migration removes the negative migration effect. Option D is wrong because if births and deaths are both zero and migration is not mentioned, it does not explain a negative change. Memory cue: positive natural increase can be outweighed by larger negative net migration.

The direct answer is A. Population growth is not necessarily equal in every region. One district may grow rapidly because of births, jobs or in-migration, while another may grow slowly or lose people. This produces different demands for schools, hospitals, housing, transport, water and employment. If planning and investment do not respond fairly to these differences, gaps in access and development can become wider. Option A is correct because it describes how different growth rates can create different levels of service demand; it does not claim that population is the only cause of inequality. Option B is wrong because areas with different population sizes, age structures and growth rates do not automatically have identical needs. Option C is wrong because growth can increase pressure in some places rather than remove every difference. Option D is too absolute: population patterns can affect regional inequality, although other economic, social and physical factors also matter. Memory cue: unequal growth often produces unequal demand, so planning must compare regions.

The direct answer is A. The relationship works in both directions. First, places with jobs, better wages, education or business opportunities may attract migrants, so economic opportunity can increase population through in-migration. Second, a growing population can enlarge the labour force and create demand for goods and services. This may support markets and new economic activity when people have suitable skills, investment and jobs are available. Population growth does not guarantee employment, but it can influence the size of the potential workforce and consumer market. Option A is correct because it states both directions without using an absolute claim. Option B is wrong because employment and migration can affect where people live. Option C is wrong because a larger population does not always destroy jobs; outcomes depend on skills, investment, productivity and planning. Option D is wrong because migration means movement of people, while death rate measures deaths in relation to population. Memory cue: opportunities attract people; people can also provide workers and consumers.