The traditional beliefs led to sparsely population is explained below in details.
Explanation:
A custom is a belief or practice established down within an organization or society with figurative meaning or particular importance with roots in the past.
A basic source of population increase that addresses this rural-to-urban transformation states that as nations urbanize and industrialize, household size typically reduces and incomes traditionally improve. Though this may not be correct in all circumstances, it is a general belief that is compatible across cultural lines.
Natural process by which water soluble substances (such as calcium, fertilizers, pesticides) are washed out from soil or wastes. These leached out chemicals (called leachites) cause pollution of surface and sub-surface water.