Environmental Studies · Geography

Deforestation and Land Degradation

2,619 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 commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Planting rows of trees along farm lands

  1. Causes soil erosion

  2. Break the force of wind

  3. Both A and B

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

Planting rows of trees along farmland also help break the force of wind and help in soil conservation. Shelter belts of trees, when planted along sand dunes, help stabilise them and prevent the desert from extending into land available for cultivation.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Soil erosion can be prevented by

  1. Over-gazing

  2. Removal of vegetation

  3. Afforestation

  4. Deforestation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Afforestation, or planting trees, helps bind the soil with roots and reduces the impact of rain and wind, thereby preventing soil erosion. The other options (over-grazing, deforestation) actually increase erosion.

Multiple choice commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

Which of the following prevents soil erosion?

  1. Afforestation

  2. Eutrophication

  3. Deforestation

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

Deforestation is the destruction of forest resources. The major effect of deforestation is the loss of precious wildlife, rare species of flora and fauna. Directly or indirectly, deforestation causes soil erosion and drought. Soil erosion can be prevented by afforestation and reforestation. Afforestation is the planting of the new forests. Plants hold soil with their roots and thus prevent erosion. Eutrophication is the process of enriching water bodies with nutrients.  It supports the abnormal growth of algae.

Thus, the correct answer is option A.

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Global warming can be controlled by 

  1. Reducing reforestation, increasing the use of fossil fuel

  2. Increasing deforestation, slowing down the growth of human population

  3. Increasing deforestation, reducing efficiency of energy usage

  4. Reducing deforestation, cutting down use of fossil fuel
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Global warming is the biggest challenge for the developing countries like India. The rapid increase in human population and the increased levels of pollution are the major contributors of global warming.The percentage of heat-trapping carbon dioxide (CO$ _2$) increases due to the burning of  fossil fuels to generate electricity, fuel our cars, and heat our homes. Deforestation also increases the concentration of carbon dioxide in the atmosphere.

So, the correct answer is option D.

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Which of the following defines the effect of deforestation on the next generation?

  1. Global warming

  2. Global cooling

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
As a result of deforestation, chances of desertification, droughts, floods, etc. increase. Deforestation can also increase the level of carbon dioxide in the Earth, it will lead to an increase in temperature i.e., global warming. As a result, the entire natural water cycle will get disrupted. This again increases the risk of natural calamities.
Thus, the correct answer is option A.
Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

Which of the following are caused due to the unplanned clearing of land?
(i) The destruction of habitats
(ii) Soil erosion
(iii) Land slides
(iv) Global warming

  1. Only (i), (ii) and (iii)

  2. Only (i), (ii) and (iv)

  3. Only (i), (iii) and (iv)

  4. (i), (ii), (iii) and (iv)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The unplanned clearing of land leads to loss of habitats and also it leads to loss of biodiversity.

The trees hold the soil tightly for rooting which prevents the soil erosion. The unplanned clearing of the land leads to soil erosion.
The unplanned clearing of land leads the land barren which may cause shifting of land.
The unplanned clearing of land leads to increase in the carbondioxide concentration in the atmosphere which leads to global warming.
So, the correct answer is option D.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Which is most harmful for life on the globe?

  1. Deforestation

  2. Soil erosion

  3. Increasing deserts

  4. Nuclear fallout.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nuclear fallout, or simply fallout, is the residual radioactive material propelled into the upper atmosphere following a nuclear blast or a nuclear reaction conducted in an unshielded facility, so called because it "falls out" of the sky after the explosion and the shock wave have passed. While deforestation, soil erosion and increasing deserts can be controlled, nuclear fallout causes genetic mutation in humans and destruction that cannot be controlled or cured.

Multiple choice geography the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Which one of the following is the main cause of land degradation in Punjab?

  1. Intensive cultivation

  2. Deforestation

  3. Over irrigation

  4. Overgrazing
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Over irrigation is main cause of land degradation in Punjab due to waterlogging leading to increase in salinity and alkalinity in the soil. Punjab, Haryana, Uttar Pradesh are the states facing issue of land degradation.

Multiple choice geography the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

The main reason for land degradation in Uttar Pradesh is __________.

  1. Mining

  2. Excessive irrigation

  3. Salinity

  4. Dense population
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the states of Punjab, Haryana, western Uttar Pradesh, over irrigation is responsible for land degradation due to waterlogging leading to increase in salinity and alkalinity in the soil. 

Multiple choice geography the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

The principal cause of soil damage in Punjab and Haryana is _______.

  1. Over irrigation

  2. Deforestation

  3. Ravine erosion

  4. Overgrazing
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In Punjab and Haryana, intensive agriculture and the use of canal systems have led to significant over-irrigation, which causes waterlogging and soil salinity, damaging the soil.

Multiple choice geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

Which one of the following is not a result of soil erosion?

  1. Accumulation of silt in the river bed

  2. Deforestation

  3. Decrease in the percolation of water

  4. Decrease in the soil fertility
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deforestation is a cause of soil erosion, not a result of it. The other options (siltation, reduced water percolation, and loss of fertility) are direct consequences of the erosion process.