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purpleberry purpleberry
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7 years ago
Salmonella enteritidis causes a food-borne illness that kills 400 to 600 Americans each year. It is found mainly in poultry products. Rather than give large doses of antibiotics to poultry, some poultry producers infect the intestinal tract of hens with a harmless bacteria, resulting in a dramatic decrease of S. enteritidis found in the chickens. In this case, what principle did the producers use?
A) mutualism
B) predation
C) competitive exclusion
D) parasitism
Textbook 
Biology: Science for Life with Physiology

Biology: Science for Life with Physiology


Edition: 5th
Authors:
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AboonaAboona
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7 years ago
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purpleberry Author
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7 years ago
Thanks for helping me with this
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