What do the glossopteris fossils tell us about the early positions of the continents ? ?

Glossopteris fossils tell us that the continent specifically in Southern Africa, Australia, India and Antarctica, which are now disjointed by great oceans, were once connected. This is because the large seeds of glossopteris could not disperse or twine a long journey by the wind or survive a rough ride through the waves of the ocean.

because growing process had stoped after 4-5 year

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me