Tag: protecting our environment

Questions Related to protecting our environment

The establishment of forest growth on areas that either had forest or lacked it is known as

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

  1. Deforestation.

  2. Organic farming.

  3. Forestation.

  4. None of these.

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Correct Option: C

The establishment of a forest or stand of trees in an area where there was no previous tree cover is known as

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

  1. Deforestation.

  2. Afforestation.

  3. Forestation.

  4. None of these.

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Correct Option: B

Forests return most of the water that falls as precipitation to the atmosphere by

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

  1. Phororespiration

  2. Respiration

  3. Transpiration

  4. All of the above

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Correct Option: C
Explanation:

Transpiration is the process by which plants loose water through their leaves in the atmosphere.

Which of the following contributes the most towards deforestation?

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

  1. Logging

  2. Commercial agriculture

  3. Subsistence farming

  4. None of the above

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Correct Option: C
Explanation:

Subsistence farming is responsible for $48$% of deforestation; Commercial agriculture is responsible for $32$%; logging is responsible for $14$%, and fuel wood removals make up $5$%.

The results of deforestation is/are:

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

  1. the reduction in water content of the soil

  2. the increase in water content of the soil

  3. drier climate

  4. increases moisure content of air

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Correct Option: A,C
Explanation:

The water cycle is affected by deforestation.Trees extract groundwater through their roots and release it into the atmosphere. When part of a forest is removed, the trees no longer transpire this water, resulting in a much drier climate.Deforestation reduces the content of water in the soil and groundwater as well as atmospheric moisture. The dry soil leads to lower water intake for the trees to extract.Deforestation reduces soil cohesion, so that erosion,flooding and landslides ensue.

Desertification is a type of

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

  1. food preparation method for plants

  2. afforestation method

  3. land degradation

  4. None of these

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Correct Option: C
Explanation:

Desertification is a type of land degradation in which relatively dry area of land becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife.

The hard mineral crust formed at or near the surface of soil is known as

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

  1. Duripan.

  2. Duricrust.

  3. Anaerobic soil.

  4. Peat.

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Correct Option: B

If deforestation is done in large scale, this natural calamity may occur

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

  1. Volcanic eruption

  2. Earthquakes

  3. Global warming

  4. Tsunamis

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Correct Option: C
Explanation:

If deforestation is performed, there will be no trees so, the amount of the greenhouse gasses will increase in the atmosphere. These greenhouse gasses trap heat from the infrared radiation in the atmosphere and increases the atmosphere's temperature i.e, global warming. 

Thus, the correct answer is option C. 

............ is a man-made source of air pollution.

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

  1. Desert

  2. Farming

  3. Dust storms

  4. Volcanic eruptions

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Correct Option: B
Explanation:

Farming is considered as the major source of air pollution due to man. This is the man-made source of air pollution which allows the particles to enter the atmosphere. The movement of tractors will cause the soil particles to rise up in the air. The particles from the fertilizers and pesticides spray enter the atmosphere. Also during harvesting and husking, the small particles in the form of pollens and husks can result in air pollution. 

Thus, the correct answer is option B. 

Which  one of the following is not a reason for shortage of usable water?

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

  1. Over exploitation

  2. Climate change

  3. Deforestation

  4. Decrease in sea level

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Correct Option: D
Explanation:

Overuse of the water resources will result in the exhaustion of the water supply. The climatic change has resulted in global warming and seasonal variations. There is a decrease in the annual rainfall which was received by a region due to shortening of the seasons. Deforestation has resulted in a decrease in the number of trees which thereby affect the amount of rainfall which was received. There is soil erosion which results in water run off.The decrease in the level of the sea is not a reason for the shortage of usable water. 

Thus, the correct answer is option D.