alleryAbout how long ago did the Ghaggar-Hakra river system become seasonal?
A4,000 years ago
B40,000 years ago
C400 years ago
D14,000 years ago
Answer & Solution
Correct answer: A. 4,000 years ago
The Ghaggar-Hakra became seasonal as the Indus civilisation declined, around 4,000 years ago.
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