Question

Find the man made cause of deforestation.
A) Urbanization
B) Forest fire.
C) Droughts.
D) All of the above.

Answer 1

Hint: We know deforestation means clearing of land usually for agriculture, industry or transportation.
Trees are cut or burned to make cattle grazing, feed crop production, and timber to build houses and to make wood products. Deforestation threatens biodiversity, decreases carbon absorption and disturbs water cycles.

 Complete step by step answer:
There are many causes for deforestation and some of them are given in the question. Let, we see one by one.
Urbanization:
Increasing global population leads to the expansion of cities and highways. The construction of roads through the forest increases the animal death rates due to loss of habitat. Expansion of infrastructure not only replaces animals and also decreases the area under forest as a result carbon dioxide absorption by trees is lower and hence it accumulates in the air.
Forest fires:
The forest fire occurs due to natural or human factors. Natural fire usually occurs due to lightning or by the combustion of dry fuel and leaves.
Forests are burned to clear places for cattle and feed crops. These fires are called slash and burn fires which alter water cycles, compromise soil fertility.
Droughts:
Due to deforestation the rate of rain decreases leading to longer droughts and increase in temperature. The longer drought can cause hotter fires which almost clear most of the forest area.
Therefore, option (B) and (c) are natural causes. Thus option (B) and (C) are incorrect. Urbanization is the man made cause of deforestation.

$\therefore $Option A is correct.

Note:
 Also we have to know that
Reforestation-Replanting of trees in the area where their plantation is already present is known as reforestation.
Afforestation: Planting of trees in the area where there was never a plantation is known as Afforestation.