What must happen to DNA before it can replicated?

What is the constructive criticism? What is the first thing you should do if you want to determine if a molecule is polar or not? How does nuclear fission create radiation? What provides instructions to cells on forming an organ? According to collision theory what best explains how a catalyst increases the reaction rate for a chemical reaction? Does the moon travel round the earth once every 24hour? What are the uses of a fringed loosestrife? What is a thrust for the jet engines? What molecules are the main electron carriers of the Krebs cycle? Do fungi have Golgi apparatus? What year did farmers start using chemicals to farm? What is a example of coastal erosion? How much movememt does sacro-iliac joint allow? What modifications would be needed for a human to live mercury? When was the time change in previous years? Is cornflour and water a physical change? Is window proper noun? What physical property is responsible for determining how Earth materials separate out into interior layers? Why do roots hold the plant to the soil? What organisms do you interact with in your community?