Is replacing bonded tooth with a crown necessary to prevent root canal?
yes
Otoslerosis should not hinder scuba diving however it is necessary to clean the ear canal with ear buds to remove whatever moisure that's still there. This will prevent infection.
Both use a levee system requiring water to fill to raise the boat to the height necessary for the next canal or in Panama to the level of sea water.
prevent disease caused by mosquitoes
Episiotomy
Canal irrigation is not feasible in Balochistan due to its arid climate, low rainfall, and limited water resources. The region lacks the necessary water sources and infrastructure to support extensive canal irrigation systems. Additionally, the terrain in Balochistan is rugged and not conducive to large-scale canal construction.
Panama's independence from Colombia in 1903 was crucial for the construction of the Panama Canal because it allowed the United States to negotiate a favorable treaty with the new Panamanian government. Prior to independence, Colombia was unwilling to grant the U.S. the control over the canal zone that was necessary for the project. By supporting Panama's independence movement, the U.S. secured a strategic location for the canal, which was vital for facilitating maritime trade and military movement between the Atlantic and Pacific Oceans. This geopolitical maneuvering ultimately made the canal project feasible.
The fine hairs in the external auditory canal help to trap and prevent debris, such as dust and particles, from entering the ear. This helps to keep the ear clean and prevent blockages. The tiny wax-producing glands in the external auditory canal secrete earwax (cerumen) which helps to lubricate and protect the ear canal from infection and irritation.
William Gorgas helped prevent mosquitos during the proses of making the panama canal
Masonry is used to line water courses to prevent erosion of the banks.
Locks are necessary to lift barges and canal narrow boats up or down through a series of lock gates. The water level at the start of a series of lock gates may be higher or lower than the water level at the other end of the lock gates. Without the retaining effect of lock gates, the canal would simply be dry in some lengths and wet in others.
The Leeds to Liverpool Canal holds approximately 1.5 billion liters of water, which is equivalent to about 400 million gallons. This large volume is necessary to maintain the water levels required for navigation and to support the diverse ecosystems along the canal. The canal stretches about 127 miles, making it one of the longest in the UK.