Environmental Studies · Geography

Deforestation and Land Degradation

2,532 Questions

Deforestation and land degradation address the environmental impacts of human activities on natural ecosystems. Key areas include soil erosion, forest fires, and the consequences of overgrazing. These subjects frequently appear in the geography and environmental science sections of competitive exams.

Causes of deforestationForest fires consequencesSoil erosion factorsDesertification impactsAgroforestry benefitsReforestation advantages

Deforestation and Land Degradation Questions

Multiple choice social studies environment in its totality alternatives for minimising depletion of natural resources components of environment effects and successes of environment conservation environmental risks of economic development tundra climatic region

Forests improve _________.

  1. Pollution

  2. Population

  3. Rainfall

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Forests plays signicant role in improving rainfall. The growing plants used to intake lot of amount of moisture from the soil and release  90% of the moisture in the atmosphere which after condensation created precipitation. On the othe hand after rainfall they used to hold the moisture in it and aslo heps the soil to hold the moisture. In this ways a cycle goes on and forest improved rainfall.

Multiple choice evs - i forests: our lifeline afforestation deforestation and its effect deforestation

What is deforestation?

  1. Clearing of forests

  2. Planting of more trees

  3. Grazing of animals in forest area

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deforestation is excessive cutting of the trees. it clears the land area which can cause the floods or may lead to infertility of the land. The most dramatic impact is a loss of habitat for millions of species. Seventy percent of Earth's land animals and plants live in forests, and many cannot survive the deforestation that destroys their homes.

So, the correct answer is option A.

Multiple choice zoology forests: our lifeline afforestation deforestation and its effect deforestation

Deforestation leads to the increased percentage of which of the following components of the environment?

  1. Carbon dioxide

  2. Nitrogen

  3. Oxygen

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deforestation leads to the increased percentage of carbon dioxide components of the environment because trees provide oxygen by taking up carbon dioxide when their number reduces the carbon dioxide was unable to be converted into oxygen. That's why its components increases.

Multiple choice zoology forests: our lifeline afforestation deforestation and its effect deforestation

The consequences of deforestation is

  1. Global warming

  2. Flood

  3. Extinction of flora and fauna

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Deforestation is when humans remove or clear large areas of forest lands and related ecosystems for non-forest use. These include clearing for farming purposes, ranching, and urban use. In these cases, trees are never re-planted.
  • Plants absorb large amounts of carbon dioxide from the atmosphere. When deforestation takes place it results in an increase in carbon dioxide concentration in the atmosphere which results in global warming.
  • Without trees, rain runs off soil into rivers and streams, raising the water level which leads to floods. Hence deforestation results in the flood.
  • Deforestation also results in the extinction of flora and fauna(plants and animals).
  • Hence The consequences of deforestation are  Global warming, Flood and Extinction of flora and fauna.
  • So, the correct answer is 'All the above'.
Multiple choice zoology forests: our lifeline afforestation deforestation and its effect deforestation

What happens if forest disappears?

  1. Climate change

  2. Flood

  3. Soil erosion

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Deforestation(disappearance of the forest) is when humans remove or clear large areas of forest lands and related ecosystems for non-forest use. These include clearing for farming purposes, ranching, and urban use. In these cases, trees are never re-planted.
  • Plants absorb large amounts of carbon dioxide from the atmosphere. When deforestation takes place it results in an increase in carbon dioxide concentration in the atmosphere which results in global warming. Hence results in an increase in temperature. Thus deforestation leads to climate change.
  • Without trees, rain runs off soil into rivers and streams i.e soil erosion, raising the water level which leads to floods. Hence deforestation results in the flood.
  • Hence Climate change, Flood and Soil erosion happens if forest disappears.
So, the correct answer is 'All the above'.
Multiple choice

How can deforestation cause drought in surrounding areas?

  1. hot temperatures = no condensation

  2. less snow = less runoff = less groundwater

  3. no trees = no soil = no groundwater

  4. no transpiration = less evaporation = less rain
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Trees release water vapor through transpiration, which contributes to cloud formation and local rainfall. Removing trees reduces this process, leading to drier conditions.

Multiple choice evs - i rules are for everyone sources of waste protecting our environment waste and its management

Overgrazing causes

  1. Negative pollution

  2. Positive pollution

  3. Rill erosion

  4. Reduction in crop yield
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Grasslands provide forage to cattle and support wildlife based on grazing food chain. Grasslands have been put to two types of pressure : overgrazing and conversion. At one time, in the history of human civilization, cattle were reared in large number. The number continues to be high. For example : In arid and semi arid areas of India, the number of grazing animals is 2 to 10 times higher than the grasslands can support. This decreases productivity and quality of grasslands and causes Negative pollution ie reduction in soil productivity due to overuse. Positive soil pollution is reduction in soil productivity  due to addition of undesirable  substances e.g : Agrochemicals, industrial wastes, air pollutants washed down by rain, faulty sanitation etc.

Multiple choice business organisation and correspondence waste and its management sources of waste protecting our environment rules are for everyone

Soil contamination is a part of 

  1. Soil erosion

  2. Land degradation

  3. Deforestation

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil pollution is caused by the addition of substances and factors which decrease its productivity. When the chemicals from the wastes are released into the soil, there is contamination of the soil. This results in degradation of the soil because there is a loss of fertility of the soil and the nutrient value is reduced. 

Soil erosion is the loss of the fertile soil due to an absence of plants which can hold the soil. 
Deforestation is the cutting of the trees which creates environmental imbalance.
Thus, the correct answer is option B. 

Multiple choice business organisation and correspondence waste and its management sources of waste protecting our environment rules are for everyone

The abiotic factors which cause soil pollution is

  1. Insect

  2. Deforestation

  3. Soil erosion

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Abiotic factors are non-living chemical and physical parts of the environment. Deforestation leads to loss of cover, and soil erosion is the physical removal of topsoil; both are abiotic processes that contribute to soil degradation.

Multiple choice business organisation and correspondence waste and its management sources of waste protecting our environment rules are for everyone

Following are the human activities that increase soil erosion except

  1. The tillage of agricultural lands

  2. Deforestation

  3. Roads and urbanization

  4. Planting on slopes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Explanation: Overgrazing, over cropping and or deforestation can lead to desertification the spread of desert like lands due to these human activities accelerating natural erosion of soil.