Explain why the direction along which the electromagnetic wave travels is not the same as the direction along which the changing electric field is applied.

Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forensic investigations? a)psychiatry b)physics c)botany d)biology

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna