friend we studied in cell cycle that it completes in two steps.
1) inter phase ( g1, gs, g2 phases)
2) division phase ( mitiosis and meosis)
* g s phase;
during g s phase cell continous start increasing in size also in this phase cell replicates it's chromosomes. and the centrosomes are divided into centrioles for spindling.
ocean ridges would form. mid-ocean ridges result from volcanic swelling and eruptions along the divergent boundary.