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The majority of studies indicate antibiotics do interfere with contraceptive pills, such as clinical studies that suggest the failure rate of contraceptive pills caused by antibiotics is very low (about 1%). In cases where antibacterials have been suggested to affect the efficiency of birth control pills, such as for the broad-spectrum antibacterial rifampicin, these cases may be due to an increase in the activities of hepatic liver enzymes' causing increased breakdown of the pill's active ingredients. Effects on the intestinal flora, which might result in reduced absorption of estrogens in the colon, have also been suggested, but such suggestions have been inconclusive and controversial. Clinicians have recommended that extra contraceptive measures be applied during therapies using antibacterials that are suspected to interact with oral contraceptives.

What are the potential effects on intestinal flora?
Answer: reduced absorption of estrogens in the colon
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Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). CSP systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. PV converts light into electric current using the photoelectric effect.

What method does the photovoltaics system use to turn light into electricity?
Answer: photoelectric effect
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During the war, the Seven Nations of Canada were allied with the French. These were Native Americans of the Laurentian valley—the Algonquin, the Abenaki, the Huron, and others. Although the Algonquin tribes and the Seven Nations were not directly concerned with the fate of the Ohio River Valley, they had been victims of the Iroquois Confederation. The Iroquois had encroached on Algonquin territory and pushed the Algonquins west beyond Lake Michigan. Therefore, the Algonquin and the Seven Nations were interested in fighting against the Iroquois. Throughout New England, New York, and the North-west Native American tribes formed differing alliances with the major belligerents. The Iroquois, dominant in what is now Upstate New York, sided with the British but did not play a large role in the war.

Who were the Seven Nations of Canada?
Answer:
These were Native Americans of the Laurentian valley