Hello! I see your question. Now what do you need help on? All you have to do is pretend you're a water molecule and you're telling a story. Is it the vocab you don't understand?
I recommend a food web, because the arrows show exactly how the energy moves to different orginisms.
Answer:
If DNA replication does not occur, then the cell cycle (Mitosis and Miosis) will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.
Simply put, without cell replication, cells can’t divide and they eventually die out.