Population Density

The direct answer is A: when services and resources are insufficient. High density itself is not automatically a problem, but many people living in one area can place pressure on water, housing, roads, schools, hospitals and jobs. If supply cannot meet demand, serious difficulties may appear. Option A is correct because it identifies the missing capacity that turns pressure into a problem. Option B is less correct because sufficient water and housing reduce the problem. Option C is less correct because good transport helps people and services move. Option D is less correct because strong health facilities support a dense population. These conditions do not prove that every problem disappears, but they are not the stated cause of serious pressure. Remember: density plus inadequate capacity creates stress.

Carrying capacity is linked with limits of resources. Exam tip: connect pressure with resources and density.

Population density means the number of people living per unit area. Therefore, a density above the national average means that the area has more people per unit area than the national average. It does not necessarily mean that its total population is larger, because even a small area can be very densely populated. Exam tip: In density questions, focus on population divided by area, not on total population alone.

Lower density indicates lower concentration. Exam tip: understand lower than average as low concentration.

When population density rises in a city, more people need places to live, work, travel, study, and receive services. This can increase demand for land for housing, roads, schools, hospitals, markets, parks, and other facilities. If the available land is limited, competition between different uses may become stronger, and buildings may become more closely packed or grow vertically. Planning is needed to provide services while protecting open spaces and managing congestion.

Option A is correct because higher urban density can raise the demand for land for housing and services. The word “can” allows for different outcomes depending on planning and city expansion. Option B is unreasonable because people still require land and facilities. Option C is the opposite of the likely effect, and option D is physically unrelated. Rising density changes the pressure and pattern of land use; it does not eliminate land.

Density makes areas of different sizes comparable. Exam tip: treat density as a comparison tool.

Small area and high population together give high density. Exam tip: remember small area plus population.

Roads can increase local settlement by improving access. Exam tip: link accessibility with density factor.

Industries attract population by providing jobs. Exam tip: write industry as an economic pull factor.

When more people depend on limited farmland land pressure rises. Exam tip: understand land pressure.

A small area can give high density even with low total population. Exam tip: separate total and density.

A large area can spread high population and keep density low. Exam tip: check the denominator that is area.

Density helps estimate demand for water land and services. Exam tip: link density with demand estimation.

High population density does not always produce severe resource pressure if a place has strong systems for managing resources and delivering services. Efficient water supply, sanitation, waste collection, public transport, housing policy, health care, and energy distribution can help many people use limited resources more effectively. Good planning can also reduce waste, improve infrastructure, and match services with population needs. Thus, density describes concentration, while pressure depends partly on capacity and management.

Option A is correct because strong resource management and service capacity can reduce the pressure felt by residents, even where many people live close together. This does not mean that every problem disappears or that high density has no challenges. Options B, C, and D would normally increase hardship rather than reduce it, because the absence of water, closed services, or unavailable housing makes resources and living conditions more difficult. The question asks when pressure may feel lower, not when it vanishes.

In low density distance and access problems can make life difficult. Exam tip: understand practical effect of sparse settlement.

More people use more resources in a limited area. Exam tip: link environmental pressure with density.

Population density = population ÷ area. Therefore, density declines when population decreases or when the same population is spread over a larger area. In contrast, an increase in population or a decrease in area raises density. Exam tip: in density questions, check changes in both the numerator (population) and the denominator (area).

If area remains same and population rises density increases. Exam tip: remember direct relation with population.

Area is the denominator in density and zero area is not practical. Exam tip: understand formula logic.

Population density has unit persons per square kilometre. Exam tip: keep unit and percent separate.

Natural and economic factors work together behind high density. Exam tip: write combined causes.

The direct answer is A: difficult terrain, harsh climate and fewer jobs. Low density means relatively few people live in a given area. Step by step: difficult terrain makes building, farming and transport harder; harsh climate makes living and working more difficult; fewer jobs reduce income and migration opportunities; together these limiting factors discourage settlement and can produce low density. A is correct because all three reasons can reduce population concentration. B is wrong because fertile land and a good market usually attract people and support higher density. C is wrong because irrigation and industry generally create food, work and settlement opportunities. D is wrong because jobs and transport facilities usually attract population rather than explain low density. Exam cue: difficult physical conditions plus weak economic opportunities usually mean sparse population.

Population can be attracted where employment exists. Exam tip: connect jobs with density pattern.

Population density is not the same as total population, a percentage, or birth rate. It is a ratio that relates population to land area, commonly expressed as people per square kilometre. A place with a large population can have low density if its area is very large, while a smaller population can have high density in a very small area. This is why a conclusion based only on total population may be misleading.

Option A is correct because it warns us not to judge density from total population alone. The area must also be known, and the comparison should use both figures. Option B is wrong because area is essential, not something to remove. Option C confuses density with a percentage, and option D confuses it with birth rate, which measures births over a period. Careful interpretation prevents these errors.

Good planning can reduce pressure from high density. Exam tip: read density with management and facilities.