Interpret this graph.

This is the graph of what happens to bacteria when facing rough conditions. X axis is the time, Y axis is the number of cells. First bacteria are in latency phase, they are still managing the conditions, then they enter the exponential phase, where they increase in number to stay alive, then they enter the stationary phase, where cells are still managing their life together, and finally if no spores are formed, they enter the D phase which is the death. If spores are formed it stays on S phase