Answer and I will give you brainiliest

Please I need a surely answer ​

right atrium = right ventricle = pulmonary arteries =lungs = pulmonary veins =left atrium = left ventricle = aorta.

Explanation:

The impure blood from different parts of the body is brought into the right auricle through the vena cava and pure blood is brought into left auricle through the pulmonary veins.

Hope it will help :)

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."