Which of the following is likely to be found in an oasis in the Sahara Desert?

From the diagram above the textural class that can hold the greatest amount of moisture is

Which of the following factors may lead to an area being densely populated?

The major export crop cultivated in the area marked III is

A desert country which has a high population density supported by irrigation is?

Which of the following ethnic groups is mainly found in the area marked I?

From the diagram above the structure labelled Y is a

From the diagram above the structured marked X is a

From the diagram above the amount of moisture retained by clay loam soil is approximately