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Water was not discovered.
Cancer was first discovered some time in 1500 BC in Egypt
John Dalton was the first to tell about the concept of the atom. This was found in the time of 500 B.C.
The zero group of noble gases was not discovered during Mendeleev's time. Sir William Ramsay was able to add them without disturbing the basic concept of the table.
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Louis Pasteurdiscovered vaccine for the first time
japan
A J Lotka
She was discovered in nbt in Disney channel. First time she sang "make a movie".
Mankind has known about (and hunted) animals since the dawn of Human time.
a long time ago
Well... tacos weren't discovered they were invented. They were made for the first time in Mexico in the 1400s the exact date is unknown.