Irrigation Engineering
Pick up the correct sequence of the part of a canal system from the following

Head works-main canal-branch canal-minor-distributary
Head work-distributary-branch canal-minor
Head works-main canal-branch canal-distributary-minor
Heads works-branch canal-main canal distributary, minor

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Irrigation Engineering
A counter berm is

A horizontal benching provided on the outside slope
A vertical benching provided on the outer edge of the bank
A horizontal benching provided on the inside slope
A vertical benching provided on the inner edge of the bank

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