Modern monoculture agriculture

A. improves the nutritional quality of foods.
B. reduces genetic diversity in crops.
C. prohibits the use of pesticides.
D. All of these statements are correct.


Answer: B

Environmental & Atmospheric Sciences

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What has been attributed to the deadly viral epidemic among dolphins in the western Mediterranean?

A) DDT B) Refined oil spills C) PCBs D) CFCs

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Researchers genetically engineer a crop to produce chemicals that attract the natural enemies of a pest. This approach combines

A) natural enemies and cultural control. B) cultural and genetic control. C) genetic and natural enemies control. D) cultural control and natural chemical control.

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Sleet is produced only when all of the air between the ground and the cloud has a temperature below freezing

Indicate whether the statement is true or false

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Of the 80,000 registered synthetic chemicals in commercial use, only ____% have been adequately tested to determine whether they are carcinogens, teratogens, or mutagens.

A. 2 B. 8 C. 20 D. 35 E. 45

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