D. <span>A primary source is written by someone who saw the event, but a secondary source is not.
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Answer:
It is made up of tiny bits of plastic.
It is spread out over different regions of the Pacific Ocean.
Buying stock on margin remained profitable as long as the stock market didn't crash and prices kept rising.
Answer:
He discovered the magnificent tomb of the Classic Maya King of Palenque, Mexico, K'inich Janaab' Pakal I.
Explanation:
