Answer:
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:
I believe that the answer is A.
This option makes the most sense because of the industrial and agricultural revolutions.
Answer is A
Hope this helps
An underground cavern collapsed
I did research
i hope this helps
