Tag: the environment and us

Questions Related to the environment and us

Which among the following are found to be one of the pollutants of air pollution?

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Chloroflorocarbon

  2. Nitrogen

  3. Carbon dioxide

  4. Oxygen

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Correct Option: A
Explanation:

CFC is found to destruct the ozone layer. It is found to be contaminating air. Cooling electronic gadgets are the major source of CFC.

Plantation of sapling on a large scale is celebrated as

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Forestation day

  2. Vanamahotsava

  3. Deforestation day

  4. Plantation day

Show answer
Correct Option: B
Explanation:

Van Mahotsav is celebrated for 1 week every year where millions of people plant trees in order to restore the forests and plantation that has been constantly destroyed. 

In 2019, it was celebrated from 1st to 7th July.
So, option B is the correct answer.

The natural disasters that can affect habitats in the environment are

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Droughts

  2. Floods

  3. Thinning of ozone

  4. Both A and B

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Correct Option: D
Explanation:

Drought and floods both are the natural disasters in which there is the extreme scarcity of water due to the absence of rainfall and floods due to heavy rainfall. Drought results in infertile agricultural lands due to nonavailability of water for crop production. Hence there is no food and water for the organisms in that area that results in either migration of organisms or their death. Flood makes soli saline and erodes the fertile soil that affects the crop production even it damages the flora, fauna and other infrastructure. Thus, the correct answer is option D.

Which of the following is an effect of deforestation?

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Water pollution

  2. Greenhouse effect

  3. Outbreak of diseases

  4. Extinction of aquatic life

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Correct Option: B
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 B. 

Which of the following is/are caused due to deforestation?

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Soil erosion

  2. Depletion of water in the catchment areas

  3. Global warming

  4. All of these

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Correct Option: D
Explanation:

Deforestation is the process of cutting or removal of forest to fulfill the need of the population. It has many negative impacts on the environment such as loss of species, soil erosion and reduces rainfall. The tree absorbs water from soil for photosynthesis and produces water vapor that is released into the atmosphere which in turn causes rainfall. If there will be less number of the tree then rainfall will also decrease. Plants absorb carbon dioxide (greenhouse gas) for photosynthesis and releases oxygen. Greenhouse gases absorbs the solar energy and increase the earth's temperature is called as global warming. Thus, the correct answer is option D.

Growing forest where there were no forest before is known as :

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Replantation

  2. Afforestation

  3. Thuming

  4. Desertification

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Correct Option: B

If we uncover half of the forest, covering of the earth, what crisis will be produced at most and at first?

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Some species will be extincted

  2. Population and ecological imbalance will rise up

  3. Energy crisis will occur

  4. Rest half forests will maintain this imbalance

Show answer
Correct Option: A
Explanation:

Forest is the home of many of distinct species and even undiscovered species if the forest is uncovered many of the species lost their natural habitat and become extinct which further leads to the following problem like:

  • Rise in population and ecological balance- The number of producer decreases, the dependent consumers will die out of starvation. This lead to rise in ecological imbalance.
  • Energy crises- Due to the decrease in the number of producers.
  • Imbalance in the forest- As the number of producer decreases, the food chain gets disturbed.
So the correct option is 'Some species will be extinct'.