Paramecium are single-celled organisms that were first discovered in the 17th century. Scientists believe paramecium have been around since the Earth was formed.
Paramecium
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
8500-170=8330cm
the man is twenty thousand (2x10 exponent 4) times larger than the paramecium
they have been on the earth for along time
forever it was on earth when the earth was made
Yes.
They have been on earth since 190 million years ago.
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.
for as long as it has had continents
long time
A very long time.