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Ivahew [28]
3 years ago
12

Which statement describes why radiocarbon dating has a upward limit of 50,000 years

History
2 answers:
KiRa [710]3 years ago
7 0
Because <span> The half-life of carbon-14 is around 5,700 years. So, by measuring the half-live of the sample, we could predict how old the sample actually is.
</span><span>After 50,000 years there is  probably less than 1% of the original C-14 left which make it much more accurate to measure, so, the upward limit is put on 50,000 years.</span>
astraxan [27]3 years ago
4 0

Answer:

Too little carbon- 14 remains in objects older than that. (gradpoint)

Explanation:

I just took the quiz

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Based on the passage, which of the statements concerning the trading
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Hello. This question is incomplete. The full question is:

“In this part [of the city of Hangzhou, China] are the ten principal markets, though besides these there are a vast number of others in the different parts of the town. The former are all squares of half a mile to the side, and along their front passes the main street, which is 40 paces in width, and runs straight from end of the city, crossing many bridges of easy and commodious [convenient] approach. At every four miles of its length comes one of those great squares of 2 miles (as we have mention) in compass [i.e. square miles]. So also parallel to this great street, but at the back of the market places, there runs a very large canal, on the bank of which towards the squares are built great houses of stone, in which the merchants from India and other foreign parts store their wares, to be handy for the markets. In each of the squares is held a market three days in the week, frequented by 40,000 or 50,000 persons, who bring thither for sale every possible necessary of life.

– Marco Polo, The Travels of Marco Polo, c. 1300.

Based on the passage, which of the statements concerning the trading city of Hangzhou is most accurate?

A) foreigners were not welcome in Chinese trading cities, because they were considered barbarians and had nothing of value to trade B) many of the people coming to trade in cities in China were Europeans traveling along the Silk Roads C) the invention of “flying cash” made trade easier by enabling Chinese merchants to use paper money instead of cumbersome copper coins D) Chinese imperial governments limited the number of markets in Hangzhou to just a few centrally located areas of the city

Answer:

B)Many of the people coming to trade in cities in China were Europeans traveling along the Silk Roads

Explanation:

Hangzhou was a highly important commercial center for the Chinese economy and was vital to that country's success. As we can see in the text above, the trade was so great that it counted on the presence, even, of foreigners. Many of these foreigners were Europeans who arrived in China via the silk route and aimed to reach this very efficient market. We also cannot ignore the importance of this city for internal trade, since the city was accessible to the Grand Canal.

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Explanation:

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