A canal is a man-made stream or a stream a naturally occurring stream that has been purposefully changed by humans. It can either be used to to transport people and goods or contain water for consumption by humans.
Sewers contain human waste and are often underground as such they as not suitable for either of the purposes to which canals are put.
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Sewage is whats in the sewer. Sewage is human waste, water, and even rainwater which collects via a sewer and then gets transported through pipes underground to sewage plants.
X ray is light and belongs to the family of electromagnetic waves. It is said to be photon whose rest mass is zero. X ray does not have charge.Electron is considered as particle which has mass, of 9.1 x10 -31 kg.Electrons posses negative charge that equals 1.602 x 10 -19 C
With a sewer line locator of course
Sewer treatment plant hopefully
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