Particles need to collide in order to react. Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions? The molecules move more quickly in the sawdust than in the block of wood. The pressure of oxygen is greater on the sawdust.
DNA replication needs to occur because existing cells divide to produce new cells. the DNA needs to be copied before cell division so that each new cell receives a full set of instructions
Gold's natural state is solid. Gold is a soft, heavy, yellow elemental metal that has a great value. Gold has a fixed shape and volume and its natural state is solid.
