Human Interference with Soil (Leaving Cert Geography): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
What percentage of global food production occurs on land-based systems?
What percentage of global food production occurs on land-based systems?
99.7%
How many hectares of fertile land become degraded globally each year?
How many hectares of fertile land become degraded globally each year?
10 million hectares
How much faster is soil being destroyed compared to its natural formation rate?
How much faster is soil being destroyed compared to its natural formation rate?
10-40 times faster
What is the approximate length of the Sahel region from west to east across Africa?
What is the approximate length of the Sahel region from west to east across Africa?
4,000 kilometres
During which months does the Sahel typically receive its seasonal rainfall?
During which months does the Sahel typically receive its seasonal rainfall?
May to October
At what rate is the desert advancing southward in the Sahel region per year?
At what rate is the desert advancing southward in the Sahel region per year?
5-10 kilometres
Between which decades did cattle numbers double in the Sahel region?
Between which decades did cattle numbers double in the Sahel region?
1930s to 1970s
By how much has the area of land used for crop cultivation increased since the 1960s?
By how much has the area of land used for crop cultivation increased since the 1960s?
Tripled
Which cash crops are grown for export in the Sahel to help repay debts?
Which cash crops are grown for export in the Sahel to help repay debts?
Cotton, millet, and groundnuts
How many acres of forest have been cleared in Mali since the 1960s?
How many acres of forest have been cleared in Mali since the 1960s?
Over 500,000 acres
How much faster are trees being cut down compared to their replacement rate?
How much faster are trees being cut down compared to their replacement rate?
30 times faster
What does the term 'monoculture' refer to in agricultural practice?
What does the term 'monoculture' refer to in agricultural practice?
Growing same crop repeatedly on same land
What is the annual population growth rate in parts of the Sahel region?
What is the annual population growth rate in parts of the Sahel region?
Up to 3%