Processes of Population Change

The correct answer is A: out-migration driven by a push factor. A disaster such as a flood, cyclone or severe drought can make the place of origin unsafe or difficult to live in. This unfavourable condition pushes people away, so the disaster acts as a push factor. Because the people leave their original area, the movement is called out-migration from that area. B describes people entering a place because a favourable feature attracts them; that is the opposite direction. C refers only to births minus deaths and does not include movement between places. D means more births per population, whereas disaster-related departure is a migration event, not a birth event. A useful warning is that push and pull describe reasons, while in-migration and out-migration describe direction: people are pushed out of the source area and may be pulled toward a safer destination.

The correct answer is A. A pull factor is an attractive condition at the destination that draws people toward it. If a city has better schools, colleges or other educational institutions, students may choose to move there for improved study opportunities. The better facility exists in the destination, so it pulls the students toward that place. B is a disaster that pushes people away from their original location; it is a push factor. C is also a push condition because lack of jobs makes the source area less attractive, although employment at another place could act as a pull factor. D similarly describes people being forced away by drought, so it is a push factor. Memory cue: “pull” means a good feature at the place people go to; “push” means a problem at the place they leave.

Correct answer: A. A pull factor is an attractive condition in a destination that encourages people to move toward it. Better employment and educational opportunities can attract migrants because they may offer improved income, skills, or future prospects. Therefore A clearly gives a pull factor. B, C, and D mainly describe difficulties in the place people may leave. Drought, unemployment, and decreasing farmland create pressure to move away; these are push factors, although the exact effect can vary among households. A does not describe a reason forcing people out of their original place; it describes an opportunity drawing them toward a destination. Memory cue: pull means attraction toward a place, while push means pressure away from a place. Always identify whether the condition is located at the destination or the source.

Correct answer: B. A push factor is a serious adverse condition in the source region that encourages or compels people to leave. An employment and livelihood crisis can remove people’s means of earning and make daily life insecure, so it is a strong push factor. B is therefore correct. A, C, and D describe advantages in a destination: high wages, hospitals, and schools attract people and are pull factors. They may help explain why people choose one destination over another, but they do not themselves push people out of the source region. A migration decision can involve both push and pull factors, yet this question asks for the strongest push condition. Memory cue: ask, “What makes people leave?” If the answer is hardship at the origin, it is a push factor; if it is an advantage at the destination, it is a pull factor.

Correct answer: A. Births increase the number of people in a population, whereas deaths decrease it. This is why the two processes have opposite effects. Natural increase is understood by comparing births and deaths: when births are greater than deaths, the population has a positive natural increase; when deaths are greater, it has a negative natural change. B reverses the meanings of the two rates. C is wrong because migration means movement into or out of a place, while births and deaths are vital or natural processes. D is wrong because neither rate measures land area. A useful way to check the answer is to imagine a small village: a new baby adds one person, while a death removes one person. The rates measure the frequency of these events in a population, not the size of the land. Memory cue: birth adds; death subtracts.

The correct answer is A. In-migration means people enter a particular destination region from another place. Their arrival adds to the destination population, so the process-effect match in A is correct. B is wrong because out-migration means people leave the source region; it does not automatically mean that the destination population decreases. C is wrong because births add new members to a population, other things being equal. D is wrong because deaths remove members from a population. To solve the question, identify whether people are entering or leaving and whether the event adds or removes population. Memory cue: in means in and adds; out means out and reduces the source population.