The earliest animal fossils where rather modern-looking cnidarians, possibly from around 580 millionyears ago. They've been around for a long time!
The earliest animal fossils where rather modern-looking cnidarians, possibly from around 580 millionyears ago. They've been around for a long time!
They are present in fossils form since Cambrian times , and were present in Proterozoic Era .
Cnidarians have a radial symmetry.
It has always been in use in our bodies as long as we have been on this Earth.
Cnidarians and Sponges are invertebrates
No. Cnidarians don't even have a circulatory system.
It's been around since God created Earth.
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
All cnidarians possess tentacles and are radially symmetrical. Most cnidarians are found in shallow water and are marine life.
they have been on the earth for along time
forever it was on earth when the earth was made
small cnidarians and big cnidarians
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.
i have been on this earth for 8 years
guinea pigs been on earth more than 3,000 years by:taliyah