Answer:
Polymerase Chain Reaction (PCR)
Explanation:
Polymerase Chain Reaction is a method commonly used to increase or amplify the amount of DNA available in a sample or segment to use it in studies or analyses that require a fair amount of available DNA.
Answer:
abiotic because it is made from rock
Explanation:
abiotic means environmental factors that aren't living.
Your answer should be Excretion.