Tag: protecting our environment

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Questions Related to protecting our environment

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

What is / are the likely consequences of deforestation?

  1. Carbon dioxide in the air increases.

  2. Destruction of habitats takes place.

  3. Mineral salts in the soil are washed away.

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

Deforestation is the depletion / destruction of forest resources. Its main cause is the explosion of human and livestock population with the increased demand of the basic needs. The major effect of deforestation is the loss of precious wildlife, rare species of flora and fauna due to loss of habitat, soil erosion, accentuated floods, drought, pollution and increased level of carbon dioxide.

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

What is the effect of deforestation on amount of $CO _2$ in atmosphere?

  1. It increases

  2. It decreases

  3. It remains unchanged

  4. Cannot be predicted
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deforestation is the permanent destruction of forests in order to make the land available for other uses. Deforestation has many negative effects on the environment. 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. Deforestation also drives climate change. Since, trees purify air by absorbing carbon dioxide from atmosphere, loss of trees would result into increase in level of carbon dioxide.

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

Replanting forest at places where they were destroyed is called :

  1. reforestation

  2. desertification

  3. replantation

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

A- Reforestation is natural or intentional restocking of forests that have been depleted mainly due to deforestation or any natural calamity. Reforestation gives boost to the wild life and helps in improving the air quality, climate control, improvement in natural resources and many more advantages for living beings.

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 prevents afforestation in deserts?

  1. Goat and grazing animals

  2. Local resident

  3. Unfertility of soil

  4. Low rainfall
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Major problem in desert is lack of rainfall. While grazing of animals and local residents can be controlled but without rainfall growth of trees and afforestation is not possible. 

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

Forest reserves can be protected through all measures except

  1. Laws inhibiting tree felling

  2. Laws allowing tree felling

  3. Prohibition of hunting

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

Laws allowing tree felling would encourage deforestation rather than protecting forest reserves. The other options are legitimate conservation measures.

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

Plants control the humidity in air by

  1. Photosynthesis

  2. Transpiration

  3. Photorespiration

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

Plants absorb water from the soil and looses it to the atmosphere by transpiration,hence,control the humidity in air by acting as a water exchanger between ground and atmosphere.

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

Deforestation causes__________ to linger in the atmosphere.

  1. $CO _2$
  2. $H _2O$
  3. $O _2$
  4. $N _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deforestation causes carbon dioxide to linger in the atmosphere. As carbon dioxide accrues, it produces a layer in the atmosphere that traps radiation from the sun. The radiation converts to heat which causes global warming, which is better known as the greenhouse effect.