PT156.S1.P1.Q6 > Analytics

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Because most agricultural practices in North America produce row after row of only a few, genetically identical, varieties of crops, the continent's food system rests precariously on a rapidly eroding genetic base, increasingly susceptible to pests and disease. ███

Problem · Crop system precarious

Because crops are genetically homogeneous

Potential Solution · Conserve genetic info of heirloom varieties

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Challenges · Farming methods unsuited to conservation

Details of Solution · Indigenous techniques

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Technique and Advantage · Hybridization

Resistence to pest and disease

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Technique and Advantage · Environmental fit

Less intensive irrigation

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Details of Solution · Heirloom varieties persisted over time

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Threat to Solution · fewer small farmers and breakdown of exchange networks

Call to Action · Must preserve indigenous knowledge

Passage Style

Problem-analysis

Single position

According to the passage, which ███ ██ ███ █████████ ██ █ █████ ██ ███ █████████ █████ ██ ████████ ████ █████████ ██████████ ██ ██████████ ████████

Question Type

Stated

What does the passage state is a cause of the shrinking stock of heirloom crops among indigenous farmers? The answer will be found in the last paragraph: there are fewer small farmers, fewer farmers planting heirloom crops, and a breakdown of community/regional exchange networks.

North American farmers ███ ███████████ ███ ██████████ ████ █████████ ████ ███████ ██████ ███████

“Exclusively” is too strong. The author never states North American farmers only use commercial varieties.

10%

The loss of ████ ███████ █████████ ███ ███ ██ █ ████ ██ ████████ █████████ ███ ██ ███████ ███ ████████

The author never states that disease and insects of killed off some heirloom varieties.

Agricultural researchers have ███ █████████ ██████████ ████████ ████ █████████ ██████ ███████ ██ ███ █████ ██████ █████ █████████ ████████

The author never states that researchers have anything to do with causing the shrinking stock of heirloom crops. Although the author does suggest that heirloom crops produce lower yields, the author never connects researchers’ consideration of that lower yield to causing fewer farmers to plant heirloom crops.

Heirloom crop varieties ████ ████ ███ █████████ ██ █████ ██ ███ ███████████ ████████████ ██████████ █████████ ██████

The author never states that difficulty of adaptation to large-scale production has caused shrinking stock of heirloom crops.

23%

There are fewer ███████ ████████ ███ ███████ ██ ███████████ █████ ████████ ████ ██████████

Stated in the last paragraph. There are fewer small farmers, and many of those farmers plant non-heirloom crops. In addition, there’s a breakdown in the community and regional exchange networks that transfer information about heirloom crops.

61%

PrepTest 156 - Section 1 - Passage 1 - Question 6

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