How many lakes filled up in this chain?
AFour
BSeven
CNine
DFive
Answer & Solution
Correct answer: C. Nine
1. Each full lake passed its extra water to the next one down.
2. In this way all nine lakes filled up.
3. The rain water could then be used throughout the year.
_Source: NCERT Class 5 Environmental Studies, 'Looking Around', Ch 6 'Every Drop Counts'_
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