Question

Disadvantages of persian wheel

Answer 1

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Explanation:Secondary School Geography 5+3 pts

Advantages and disadvantages of replacing persian wheel with tubeweel?

Report by Saad91 28.07.2018

Answers

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-More efficient / faster / does not need to rest

-For larger area / more water / goes deeper

-Regular supply / can be used at any time of year / continuous -Less labour required

-Cleaner water

-Reduces waterlogging and salinity

Disadvantages of tube well

-Expensive / cannot be used by poor farmers

-Reduces groundwater / lowers water table