Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 45, Problem 1CT

With antibiotic resistance rising, researchers are looking for ways to reduce use of these drugs. Some cattle once fed antibiotic-laced food now get probiotic feed that can bolster population of helpful bacteria in the animal's gut. The idea is that if a large population of beneficial bacteria is in place, then harmful bacteria cannot become established or thrive. Which ecological principle is guiding this practice?

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Explain Why  bacteria do not cause food-borne illness until they are allowed to grow and increase their population density to a threshold number, like when being left out at room temperature for 12 hours or more.    What happens as the bacteria grow in numbers?  What do pathogenic bacteria synthesize?      How do bacteria know what their population density is?
I think my reasoning is wrong because I keep getting Italy as the answer choice. It seems odd to me that I got Italy three times. The other option is Burkina Faso. So, it is either Italy or Burkina Faso. Please carefully review my answer choices because I could be WRONG. Richness refers to the total number of species of microbe in the gut microbe. Italy, Europe seems to have greater gut microbe richness. Diversity- It is the variety of species Italy has a greater variety of species. Evenness refers to the distribution of abundance across the species in the community. Italy seems to have greater evenness as the species percentage is almost similar.
What is one of the primary benefits of bioremediation? Group of answer choices A. to improve human health with the help of living organisms such as bacteria B. to clean up areas polluted with toxic compounds by using bacteria C. to improve soil quality for plant growth by using bacteria D. to improve bacteria for production of useful chemicals
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