Tag: pollution of soil

Quizzes (0) Questions (99)

Questions Related to pollution of soil

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Which of the following defines the effect of deforestation on earth?

  1. Increased chances of desertification, droughts, floods
  2. Increase in the level of $O _2$

  3. Global warming

  4. Both A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Effects of deforestation on the Earth:
As a result of deforestation, chances of desertification, droughts, floods, etc. increase. Deforestation can also increase the level of CO$ _2$ 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.
Global Warming is the increase of Earth's average surface temperature due to the effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth.
Hence, the correct answer is option D.
Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Which of the following defines the effect of deforestation on villages? 

  1. Top layer of the soil will be easily removed

  2. Soil erosion

  3. Less fertile soil

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Effects of deforestation on villages- Roots of plants hold soil particles together. In the absence of plants, the top layer of the soil will be easily removed by the action of high-speed winds or water flow. Thus, deforestation increases the chances of soil erosion. As a result, soil loses humus and become less fertile. Hence, a fertile land, which is a source of living for farmers in villages, gets converted into a desert.

Therefore, the correct answer is option D.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Which of the following defines the effect of deforestation on wild animals?

  1. Habitat of wild animals is developed, then their numbers would automatically decline.

  2. Habitat of wild animals is destroyed, then their numbers would automatically decline.

  3. Habitat of wild animals is destroyed, then their numbers would increase.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Deforestation is the clearing of forest which causes loss of habitat. If the habitat of wild animals is destroyed, then their numbers would automatically decline as they start moving towards urban and rural areas to meet their requirement and search a better option for their survival.
So, the correct answer is option B.
Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Deforestation is the major cause of

  1. Transpiration

  2. Genetic erosion

  3. Desertification of habitat

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Deforestation is the cutting of trees. When trees are lost due to deforestation, the result can be a drier climate and desertification, or the transformation of the once fertile land to desert.

Deforestation is the term that describes the cutting down or clearing of trees from a wooded area. 
Tree roots absorb water from the ground and return water vapor back to the atmosphere. If trees are removed and can no longer contribute to the water cycle and thus, transform into a much drier climate. This dry environment can spread due to a decrease in atmospheric water vapor and results in a decline in precipitation levels in the area and leads to the desertification
Thus, the correct answer is option C.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Deforestation generally decreases 

  1. Rainfall

  2. Soil erosion

  3. Drought

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

When forests are destroyed, the atmosphere, water bodies and the water table are all affected. Trees absorb and retain water in their roots and some of this moisture is transpired into the atmosphere, regulates the water cycle. When this process is broken, the atmosphere and water bodies begin to dry out. 

Therefore, the correct answer is option A.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Frequent floods in plains of Northern India is due to

  1. Excessive rainfall

  2. Siltation of dams

  3. Deforestation in catchment areas

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

Frequent floods in plains of Northern India is due to deforestation in catchment areas. Deforestation in the catchment area has led to an increase in the silt content of the river flow. Bihar is India's most flood-prone State, with 76% of the population in the north Bihar living under the recurring threat of flood devastation.

Removal of vegetation cover has caused widespread erosion in Western Ghats, Uttar Pradesh and in Himachal Pradesh.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Deforestation leads to reduced rainfall due to

  1. Level of $CO _2$ in the atmosphere rises

  2. Global warming

  3. Disturbance in natural water cycle

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Green plants lose water by the process of transpiration. This contributes a lot towards atmospheric moisture. Thus, green plants have major contribution in precipitation. Due to this, deforestation leads to reduced rainfall. Thus, the correct answer is option C.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

What are the consequences of deforestation?

  1. Soil erosion

  2. Loss of biodiversity

  3. Floods and droughts and climate change due to global warming

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Causes of deforestation are as follows:
  • Clearing land for human habitation and cultivation
  • The need of wood for building houses and factories.
  • The need of wood for making furniture.
Consequences of deforestation are as follows:
  • Soil erosion
  • Depletion of groundwater
  • Flash flood
  • Global warming
  • Loss of biodiversity
  • Droughts and climate change due to global warming
Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Desertification is due to

  1. Deforestation

  2. Soil-erosion due to water

  3. Soil-erosion due to wind

  4. Very high temperature and low rainfall
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Desertification is defined as a process of land degradation due to climatic variations and human activities. Overgrazing is the major cause of desertification worldwide. Other factors are urbanization, overdrafting of groundwater and deforestation. Thus the correct answer is option A.

Multiple choice evs let's plant trees damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

Which of the following provides nutrients to the seedlings to grow in forests?

  1. Bacteria

  2. Fungi

  3. Decaying animal dung

  4. Beetles and grubs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Animals living in the forest include herbivores and carnivores. The dung of these animals are decomposed by insects living in the soil. This contributes to the fertility of the soil by adding organic matter and nutrients, such as nitrogen, that is trapped by bacteria in the soil. This provides nutrients to the seedlings to grow in forests. Thus the correct answer is option C.