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Kryger [21]
3 years ago
7

What can scientist learn from the rate at which radioactive elements decay

History
1 answer:
musickatia [10]3 years ago
4 0

Answer:  A rocks absolute age

Explanation: I just took that course,

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What could congress do under the articles of confederation
cluponka [151]

Answer: Congress claimed the following powers: to make war and peace; conduct foreign affairs; request men and money from the states; coin and borrow money; regulate Indian affairs; and settle disputes among the states.

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3 years ago
Which of the following two sporting events did we adopt from the ancient Greeks?
nekit [7.7K]
The answer is D try it 
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Which statements describe causes of the Spanish-American War in 1898?
zalisa [80]

Answer:

A, C, and B

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I took the test i swear

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2 years ago
Choose the description that is NOT true of the term or name below. Aztec
Mariana [72]
Answer is D.
They were extremely warlike as well as being very agricultural.
The sacrificed slaves to the Sun god on top of a temple (Chichen Itza) then threw the decapitated head down the steps of the temple.
The Triple Alliance was the connection of <span>Mexico-Tenochtitlan, Texcoco, and Tlacopan into the one Aztec Empire. </span>
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3 years ago
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How would the world be different if the Columbian Exchange never happened?
miss Akunina [59]

When Europeans first touched the shores of the Americas, Old World crops such as wheat, barley, rice, and turnips had not traveled west across the Atlantic, and New World crops such as maize, white potatoes, sweet potatoes, and manioc had not traveled east to Europe. In the Americas, there were no horses, cattle, sheep, or goats, all animals of Old World origin. Except for the llama, alpaca, dog, a few fowl, and guinea pig, the New World had no equivalents to the domesticated animals associated with the Old World, nor did it have the pathogens associated with the Old World’s dense populations of humans and such associated creatures as chickens, cattle, black rats, and Aedes egypti mosquitoes. Among these germs were those that carried smallpox, measles, chickenpox, influenza, malaria, and yellow fever.

The Columbian exchange of crops affected both the Old World and the New. Amerindian crops that have crossed oceans—for example, maize to China and the white potato to Ireland—have been stimulants to population growth in the Old World. The latter’s crops and livestock have had much the same effect in the Americas—for example, wheat in Kansas and the Pampa, and beef cattle in Texas and Brazil. The full story of the exchange is many volumes long, so for the sake of brevity and clarity let us focus on a specific region, the eastern third of the United States of America.

As might be expected, the Europeans who settled on the east coast of the United States cultivated crops like wheat and apples, which they had brought with them. European weeds, which the colonists did not cultivate and, in fact, preferred to uproot, also fared well in the New World. John Josselyn, an Englishman and amateur naturalist who visited New England twice in the seventeenth century, left us a list, “Of Such Plants as Have Sprung Up since the English Planted and Kept Cattle in New England,” which included couch grass, dandelion, shepherd’s purse, groundsel, sow thistle, and chickweeds. One of these, a plantain (Plantago major), was named “Englishman’s Foot” by the Amerindians of New England and Virginia who believed that it would grow only where the English “have trodden, and was never known before the English came into this country.” Thus, as they intentionally sowed Old World crop seeds, the European settlers were unintentionally contaminating American fields with weed seed. More importantly, they were stripping and burning forests, exposing the native minor flora to direct sunlight and to the hooves and teeth of Old World livestock. The native flora could not tolerate the stress. The imported weeds could, because they had lived with large numbers of grazing animals for thousands of years.

Cattle and horses were brought ashore in the early 1600s and found hospitable climate and terrain in North America. Horses arrived in Virginia as early as 1620 and in Massachusetts in 1629. Many wandered free with little more evidence of their connection to humanity than collars with a hook at the bottom to catch on fences as they tried to leap over them to get at crops. Fences were not for keeping livestock in, but for keeping livestock out.


5 0
3 years ago
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