You can see some blood vessels on the outside of the hands specially in older people. Are those veins or arteries? How can you confirm your answer? Explain properly please.

I think this is the answer/ Solution: The blood vessels that we see on the outside of hands especially in older people are the veins because arteries are deeply buried in the skin with several layers. They are superficially present outside the skin.

Explanation:

c should be the answer

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: