Tag: evs - i

In India, deforestation is the main cause of soil erosion. The quality of topsoil loss in India is about 18.5% of the total global loss.

As the population increases, the need for land also increases, forests are cleared for the construction of roads and malls and buildings. The demand of food grains also increases, so it calls for clearing more trees and growing food crops. Forest fires also cause deforestation.

Forest fires are naturally caused and not man made like urbanization and agricultural activities, hence, they are the only natural cause of deforestation. Natural fires are caused by lightning, with a very small percentage started by spontaneous combustion of dry fuel such as sawdust and leaves. Human activities may also lead to forest fire.

Deforestation means cutting down of forests. Droughts are natural causes of deforestation and urbanization is the man-made cause of deforestation. 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.

Natural causes of deforestation are forest fires, droughts, exotic animals, floods, climate change, and overpopulation of foreign animals. All of these add to deforestation. Forest fires burn trees in large amounts. Many animals depend on trees for shelter. When a drought occurs, trees won’t have water to survive, also leaving animals without a stable home. Also, when animals that are not from the area come and make it their habitat, they take food, water and space up that need to be used by native animals. 

Deforestation is the permanent clearing of forests to make the land available for other uses. The main reasons for deforestation are overpopulation, urbanization, wood requirement, obtaining land for cattle-grazing. There has been a considerable decrease in the number of plant and animal species due to deforestation.  Other ill-effects are rise in pollution, global warming and soil erosion. Thus the correct answer is option D.

the correct answer is 'all of the above'

Cash crop economy of third world is a cause of deforestation is not true for deforestation rest all options  are the reasons for deforestation.

Deforestation and combustion of fuel increase the concentration of carbon dioxide in the atmosphere. Deforestation is the excessive cutting down of trees which increases the carbon dioxide concentration in the atmosphere. Fuels burns in the atmosphere in the presence of oxygen. Burning of fuel in the sufficient supply of oxygen leads to the production of carbon dioxide while the insufficient supply of oxygen leads to the production of carbon monoxide.