Which of the following factors are cited as accelerating the process of extinction of natural vegetation and wildlife? 1. Soil erosion 2. Constructional activities 3. Tsunami 4. Landslides Select the correct answer using the code given below:

The correct option is (d). Explanation The extinction of natural vegetation and wildlife is driven by changes in climatic conditions and human interference. These factors result in the loss of natural habitats, which is the primary cause of species extinction. Both natural disasters and anthropogenic activities accelerate this process. Statement-wise Analysis - 1. Soil erosion: Correct. Soil erosion involves the removal of fertile topsoil essential for the growth of natural vegetation. The degradation of soil quality leads to the loss of plant life and the subsequent displacement or extinction of wildlife dependent on that vegetation. - 2. Constructional activities: Correct. Anthropogenic activities such as the construction of roads, dams, and urban settlements lead to direct deforestation, fragmentation of habitats, and encroachment on wildlife corridors, significantly accelerating biodiversity loss. - 3. Tsunami: Correct. Natural disasters like tsunamis cause sudden and massive destruction of coastal ecosystems, uprooting vegetation (such as mangroves) and killing wildlife, thereby contributing to local or regional extinction events. - 4. Landslides: Correct. Landslides, often triggered by heavy rainfall or seismic activity, physically destroy habitats in mountainous regions, burying vegetation and disrupting the ecological balance required for wildlife survival. Key Takeaway The process of extinction is accelerated by a combination of human factors (deforestation, constructional activities) and natural factors (soil erosion, tsunamis, landslides, forest fires).

NCERT Class 8 Geography — Chapter 1: Land, Soil, Water, Natural Vegetation and Wildlife Resources

mcqmedium

Which of the following factors are cited as accelerating the process of extinction of natural vegetation and wildlife?

Soil erosion
Constructional activities
Tsunami
Landslides

Select the correct answer using the code given below:

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B3 and 4 only
C1, 2 and 4 only
D1, 2, 3 and 4

Did you get this right?

Solution

The correct option is (d).

Explanation

The extinction of natural vegetation and wildlife is driven by changes in climatic conditions and human interference. These factors result in the loss of natural habitats, which is the primary cause of species extinction. Both natural disasters and anthropogenic activities accelerate this process.

Statement-wise Analysis

1. Soil erosion: Correct. Soil erosion involves the removal of fertile topsoil essential for the growth of natural vegetation. The degradation of soil quality leads to the loss of plant life and the subsequent displacement or extinction of wildlife dependent on that vegetation.
2. Constructional activities: Correct. Anthropogenic activities such as the construction of roads, dams, and urban settlements lead to direct deforestation, fragmentation of habitats, and encroachment on wildlife corridors, significantly accelerating biodiversity loss.
3. Tsunami: Correct. Natural disasters like tsunamis cause sudden and massive destruction of coastal ecosystems, uprooting vegetation (such as mangroves) and killing wildlife, thereby contributing to local or regional extinction events.
4. Landslides: Correct. Landslides, often triggered by heavy rainfall or seismic activity, physically destroy habitats in mountainous regions, burying vegetation and disrupting the ecological balance required for wildlife survival.

Key Takeaway

The process of extinction is accelerated by a combination of human factors (deforestation, constructional activities) and natural factors (soil erosion, tsunamis, landslides, forest fires).

Your note

More from Chapter 1: Land, Soil, Water, Natural Vegetation and Wildlife Resources

Consider the following statements regarding the distribution of population and land resources: 1. Ninety per cent of the world’s population occupies only thirty per cent of the land area. 2. Areas with steep slopes and rugged topography are generally densely populated. 3. Plains and river valleys are densely populated due to suitability for agriculture. Which of the statements given above is/are correct?

medium

Which of the following factors are considered "Physical Factors" determining land use? 1. Topography 2. Population 3. Soil 4. Technology 5. Minerals Select the correct answer using the code given below:

easy

With reference to 'Common Property Resources', consider the following statements: 1. Common Property Resources refer exclusively to land owned by private individuals. 2. Community lands are also known as Common Property Resources. 3. Encroachment on these lands is observed primarily to expand agricultural land in urban areas. Which of the statements given above is/are correct?

hard

Which of the following are cited as major threats to the environment resulting from the expansion of agriculture and construction activities? 1. Land degradation 2. Landslides 3. Soil erosion 4. Desertification Select the correct answer using the code given below:

medium

Consider the following methods for the conservation of land resources: 1. Deforestation 2. Land reclamation 3. Regulated use of chemical pesticides 4. Checks on overgrazing Which of the methods given above are to check land degradation?

easy

Keep practising Chapter 1: Land, Soil, Water, Natural Vegetation and Wildlife Resources

Work through every question from this NCERT chapter.

Browse all NCERT Class 8 Geography chapters

The correct option is (d).

Explanation

Statement-wise Analysis

1. Soil erosion: Correct. Soil erosion involves the removal of fertile topsoil essential for the growth of natural vegetation. The degradation of soil quality leads to the loss of plant life and the subsequent displacement or extinction of wildlife dependent on that vegetation.
2. Constructional activities: Correct. Anthropogenic activities such as the construction of roads, dams, and urban settlements lead to direct deforestation, fragmentation of habitats, and encroachment on wildlife corridors, significantly accelerating biodiversity loss.
3. Tsunami: Correct. Natural disasters like tsunamis cause sudden and massive destruction of coastal ecosystems, uprooting vegetation (such as mangroves) and killing wildlife, thereby contributing to local or regional extinction events.
4. Landslides: Correct. Landslides, often triggered by heavy rainfall or seismic activity, physically destroy habitats in mountainous regions, burying vegetation and disrupting the ecological balance required for wildlife survival.

Key Takeaway

The process of extinction is accelerated by a combination of human factors (deforestation, constructional activities) and natural factors (soil erosion, tsunamis, landslides, forest fires).