Answer:
Explanation:
Deforestation cause:
Direct causes of deforestation are agricultural expansion and infrastructure expansion such as road building and urbanization.
Deforestation effect:
The loss of trees and other vegetation can cause climate change, desertification, soil erosion and flooding.
Desertification cause:
Climatic variations and Human activities can be regarded as the two main causes of desertification.
Desertification effects
are topsoil, groundwater reserves, surface runoff, human, animal, and plant populations.
Urbanization cause:
The two causes of urbanisation are natural population increase and rural to urban migration.
Urbanisation effects
all sizes of settlements from small villages to towns to cities, leading up to the growth of mega-cities which have more than ten million people.
