Toilet or sink
The most common causes are human error and faulty equipment.
There isn't really much of an antonym for contraption, but most likely the antonyms are scraps and junk
The most common mineral found in the human body is calcium.
Water is the most common molecular subsance found in the human body(~98%). and phosphorous is the most abundant element in human body.
The specific most common name for the study of the human body is anatomy.
The most common natural human hair colors are black, brown, blonde, and red.
Red blood cells are the most common in human blood.
Labour
the most common thing on earth crust as well as in human body is water .
Muhammad
Human
Human