関連ワード:  explain the causes of deforestation    explain the causes of deforestation class 6    explain the causes of deforestation in india    explain the causes of deforestation in detail    explain the causes of deforestation in nepal    explain the causes of deforestation class 8    explain the causes of deforestation class 9    explain the causes of deforestation during colonial rule class 9    explain the causes of deforestation class 7    explain the causes of deforestation in africa