Which blood vessel receives blood from the trunk and legs? artery aorta inferior vena cava superior vena cava

Its inferior vena cava which receives deoxygenated blood from the trunk and legs.

Explanation:

Our hear has 4 chambers. The upper two chambers receive the blood from all the parts of the body, where as the lower two chambers pump the blood. The right atrium receives the deoxygenated blood from various parts of the body. The left atrium receives oxygenated blood from lungs. The superior and inferior vena cava are veins, they carry deoxygenated blood. The one which carries deoxygenated blood from upper half of the body to right atrium is superior vena cava and the one which carries deoxygenated blood from lower half of the body to right atrium is inferior vena cava.

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."

your answer should be c) enjoy!