Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

What can be one major cause of change in age structure?

Answer and explanation

Correct answer: Changes in birth and death rates

Age structure changes when the relative size of different age groups changes. Birth rates have a direct effect because a period of high fertility adds many children, while a period of low fertility produces smaller younger cohorts. Death rates also matter: lower mortality, especially at older ages, allows more people to survive into later life and can increase the elderly share. Together, these changes reshape the population’s age distribution.

For example, sustained high birth rates can make the population youthful, whereas falling birth rates combined with longer life expectancy can make it older. Therefore option A is the best answer. Mountain building, ocean salinity, and soil erosion may be important physical or environmental processes, but they do not directly determine the number of people in each age group. Migration can also affect age structure, but among the given choices, changes in birth and death rates are the major demographic cause.

Related tags

Birth RateDeath RateAge Structure ChangePopulation CompositionAge StructureGeographyClass 12 McqRdgdfgdfg

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.