Which part of the eye is a muscle that regulates the size of the pupil

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

Explain the process that creates the heat of the sun?

Closing romer’s gap. what is the significance of the new fossil evidence found in scotland? answer in claim evidence and reasoning