Why is it important that human chromosomes have many origins of replication

How is the motion of the particles of water at 80 ⁰c different from the motion of the particles of water when it is 30 ⁰c?

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

The normal shape of an enzyme is as shown in structure a. if the enzyme’s shape changes to that shown in structure b, what are two consequences of this change?