A student wants to design a device that will use radio waves to kill bacteria. He knows that bacteria can only be killed by high-energy waves. Determine if his device will successfully kill bacteria and provide an explanation.

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?