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
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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
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.
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
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