3 years ago

"Three Sisters" farming was an agricultural system of companion planting innovated by the Iroquois-

History

1 answer:

omeli [17]2 years ago

5 0

Answer:

The last choice.

Explanation:

Beans help the nitrogen cycle along, while many other crops tend to destroy it if used too long. Thus, farmers rotated crops like beans into the cycle to allow fields to "recharge" their nitrogen content so that more popular crops like wheat and corn would have nutriets to grow by.

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In 1935, J.S. Haldane and J.G. Priestley noted that "A person whose blood is half-saturated with CO is practically helpless… but

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When blood is half saturated by CO, partial disassociation cureve of Oxygen shifts to left

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