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It depend in our creator and that is god
Nobody knows because human existence has been for so long.
Sepsis is a very serious condition and can be extremely life threatening depending on the bacteria and the patient's medical condition.
Prehistory is that very long period of human existence where no written historical accounts were made.
Puerperal sepsis is highly contagious by touch. But in the 19th century, scientist Ignaz Semmelweis discovered that the disease wasn't a threat so long as people thoroughly washed their hands.
As long as cows have been in existence, or the whole Bos primigenius species and subspecies have been in existence.
Birds are believed to have evolved long before humans did, given the existence of bird remains and fossils long before any trace of humans on Earth.
Very old, the art of hand sewing has been in existence as long as human beings have been wearing clothes,.
The existence of vampires is prehistoric. They lived before there were mean of writing things down. The condition may even precede the human race.
Helium is has been in existence since the beginning of the universe.
they have been in existence for 110 years since 1901.
Depends on your definition of a human. Some date back a hundreds of thousands of years. Some people believe the world itself has only been around for 6000 years. Go figure.