Why are pandemics a relatively recent phenomenon in human history? International travel became possible. O Humans began to live side-by-side with animals. O Humans began living in permanent settlements. O All of the above.

Safari File Edit View History Bookmarks Develop Window Help Fri Feb 4 9:35 PM catcourses.ucmerced.edu P N JC О МуМer... G Demo... Q Mende... b Scienc.. Q natural... G Google Inbox Homew... Paraph... H/W -. 8. The bacterium Staphylococcus aureus causes skin infections commonly called staph infections. One antibiotic that has been used to treat staph infections is methicillin. However, resistance to this antibiotic has become a widespread problem. The graph below shows the percentage of S. aureus strains that have become resistant to methicillin over a 20-years period in the United States. As you may have heard, methicillin-resistant S. aureus strains are called MRSA. Explain these data. Is evolution occurring? If so, propose a hypothesis to explain why S. aureus populations are evolution with regard to antibiotic resistance. Copyright © McGraw-HII Education. Pemission required for reproduction or display. 60% 50% 40% 30% 20% 10% 0% 1981 1985 1989 1993 1997 2001 00 (o % S. aureus…

Give me an example of a sudden change and a gradual change can causes extinction to population of organisms.

T/F Viruses evolve are not technically alive. Group of answer choices True False T/F Archaeans are most noted for causing diseases in insect larvae True False T/F There is evidence that small organic molecules form in space and come to earth on asteroids/meteors.

In which population is evolution by natural selection most clearly demonstrated? Group of answer choices A virus sweeps through a population and makes everyone ill.  A virus sweeps through a population and kills 10% of infants. It is not clear why some die and some don't. A virus sweeps through a population and kills 20% of the population. It is not clear why some die and some don't. A virus sweeps through a population and permanently sterilizes the 10% of the population that has allele hx25c.

About how many species of viruses do people have In there lungs on average 17 1750 175 None None of these choices

What happens to an infant's gut microbiome over the first year? Natural selection excludes any microbes introduced when the infant starts solid foods.   The infant gut is similar to the adult gut microbiome throughout the first year, unless antibiotics are given. The infant's gut microbiome changes every week.   The number of microbes decline between birth and 1 year old due to drift.

Which of the following is not a major cause of spread of infectious diseases in human populations? O a. A settled life style. O b. Marriage patterns. Oc. Domestication of animals O d. Agricultural production patterns, irrigation and fertilization of soil. Oe. Climate.

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