An oasis can be formed in many ways, both natural and human-made.
How is an Oasis Formed? - WorldAtlas
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How is an Oasis Formed? - WorldAtlas
What Is An Oasis? - WorldAtlas
What Is An Oasis? - WorldAtlas
Oasis - Wikipedia
What Is An Oasis? - WorldAtlas
How is an Oasis formed Geography terms for UPSC, IAS, CDS, NDA, SSC CGL
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What Is an Oasis in the Desert?
Oasis - Wikipedia
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