they occur because of the moon and the moon controlled all tides
In an oligopoly type of market, there are only few producers whom dominate the market. This is the market type wherein there are only small number of firms that control the majority of the market share. The opposite to Perfect Competition, wherein there are unlimited number of producers. In an oligopoly, since there are only a few numbers competitors, each firm is likely to be aware of each other's action.
There are a few different names for Mitosis: Cell division and cellular division (these are the words that I can think of) I hope this helps.
Mutation would be the best answer.
To protect and provide support for the cell
