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Scientists Were Interested in Determining If the Amount of Nicotine

question 33

Multiple Choice

Scientists were interested in determining if the amount of nicotine present in tobacco leaves is related to the amount of water received by the plants. In a greenhouse, a total of 120 tobacco plants were selected. During the growing season, 30 plants received the normal amount of water, 30 plants received 75% of the normal amount of water, 30 plants received 50% of the normal amount of water, and 30 plants received 25% of the normal amount of water. At the end of the growing season, one leaf was selected from each plant and the amount of nicotine present was recorded for each. Researchers determined that leaves from tobacco plants receiving the normal amount of water during the growing season had more nicotine than leaves from tobacco plants receiving less water. For this experiment, identify the response and treatment variables.

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Definitions:

Slaveowners

Individuals or entities that owned, bought, or sold humans as property for forced labor, predominantly in historical contexts such as in pre-Civil War United States.

Northerners

Individuals from the northern part of a country or region; in the United States context, it often refers to people living in the North during the Civil War era, distinguishing them from Southerners.

Abolitionist Organizations

Entities, groups, or societies dedicated to ending the practice of slavery and promoting the emancipation of enslaved people.

William Lloyd Garrison

A prominent American abolitionist, journalist, and social reformer, known for founding the anti-slavery newspaper "The Liberator."