Paragraph 4 of the passage serves mainly to do which of the following? A. Show the progress of desertification down through history B. Propose a method for dealing with the desertification p
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Paragraph 4 of the passage serves mainly to do which of the following?
Show the progress of desertification down through history
Propose a method for dealing with the desertification problem.
Describe one process that leads to desertification
Describe the main cause of desertification in one particular area