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Environmental Studies (EVS)
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Water and water management
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Age 10-12
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level: 5
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English
Author's Instructions
Waste water, simple water filter, water purification at water works, rain water harvesting
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Environmental Studies (EVS)
-
Water and water management
-
Age 10-12
-
level: 5
-
English
Author's Instructions
Waste water, simple water filter, water purification at water works, rain water harvesting