Although advanced plumbing systems have existed since 2000 B.C., metal pipes and fittings were not commonplace in the United States until the early 1900s.
approximately 25 years ,however noticeable increase in usage in the last 10yrs
As long as cows have been in existence, or the whole Bos primigenius species and subspecies have been in existence.
There is no financial information for the Charlotte Pipe company, the company has been open since 1901, creating plumbing pipes and fitting systems for distribution.
Helium is has been in existence since the beginning of the universe.
they have been in existence for 110 years since 1901.
Irreducible complexity is a theory that statesÊadvanced organic systems are to advanced to have come into existance by evolution alone.ÊThis theory has been dismissed by the scientific community as psuedoscience.
the present flag has been in existence since way date
Yes. Somewhere in the world. It is thought that some sort of plumbing has been around since 2700BC
The denotation of the word "old" refers to something that has existed for a long time or is not young. It typically describes people or things that have advanced in age or have been in existence for a significant period.
The oldest known indoor plumbing was created by the Minoans, who flourished on the island of Crete between 3000 BCE and 100 BCE. In the Palace of Knossus and at Akrotiri (on the nearby island of Santorini) there have been discovered hot and cold running water systems and even flush toilets.
"have been in existence" is the simple predicate. It expresses the action of the sentence.