How was the falaj built​

Shafts are built at a 20-metre distance along the tunnel. They also have a ring of burnt clay that removes debris and helps in ventilation. The ring protects the channel from destruction in case the tunnel collapses and also prevents the falaj from flooding.

the answers are excess supply, and fall

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this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

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