Clams have been around for about 500 million years.
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
Yes, they serve clam chowder.
A clam might become a fossil if it gets trapped on a sedimentary rock and remains there for a long..long...time.
I guess a very long time, a 405 year old clam found in Iceland, go to link: http://abcnews.go.com/technology and enter in "oldest clam" or "old clam" in the search field and the article will come up!!
they have been on the earth for along time
Since Pre-Columbian times, natives have been "clamming" the coastal waterways of Florida.
They have been on earth since 190 million years ago.
long time
for as long as it has had continents
A very long time.
Well it depends on what you mean. The distance for how long it takes, or the time as in how long since Earth was made. Earth as you know has been here a long long time. Stars light has been shinning towards Earth eversince it was made. To see how long it takes for a stars light to reach Earth depends on how distant and huge the star is.
i have been on this earth for 8 years