For decades at the very least. Although reports of Bigfoot sightings go back for hundreds of years.
Pi have been studied for over 10 centuries!!!
FEGELEIN!
I have been studying for two hours. How long have you been waiting? the pattern: [have] been [verb]ing
its only been around for 120 years wow :) your welcome for answering my uncle was a seismologist
they learn how long that rocs been there ,what encoutered it and how old it is
None, it's a hole! (1 cubic foot has been dug out.)
Victor has been away from his family, and studying at Ingolstadt for almost six years.
My foot is actually about 1 foot long!
My foot
A long time ago a king wanted to see how long his foot was. His foot was exactly 12 feet long so he called that a foot.
If your foot is twelve inches long then yes it is. The word foot was used to establish the measurement "a foot" because it is the approximate size of a mans foot.
foot long pulse tail