long time
I don't really know, but they say that insects were on earth way before dinosaurs.
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
The American cockroach, also known as the Palmetto bug, has been around for millions of years and is considered one of the oldest species of insects. Fossil evidence suggests that they have been on Earth for at least 280 million years.
No, insects are natural to earth, they belong to the earth thus in no sense can insects invade earth.
they have been on the earth for along time
They have been on earth since 190 million years ago.
becaus insects have been around long befor mammals even befor the dinos have and beyound that
Insects didn't come to earth, it lived on earth since the dinosaurs lived.
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.