Staph, as well as other pathogens, may change genetically by means of plasmids. Plasmids are DNA molecules which carries a rich diversity of genes that benefit the host cell. In this specific case, the host cell is the Staph bacteium. Among other things, plasmids carry antibiotic resistance genes.
<span>To illustrate how an ordinary Staph aureus bacterium can evolve into a methicillin-resistant bacterium, let's use the patient who doesn't finish an antibiotic prescription of penicillin. The Staph is weakened but not killed. Bacterial plasmids work quickly to produce genes that make the bacteria resistant to the drug. These parent bacteria replicate and pass on the plasmids, along with the DNA they contain, to the "daughter" cells. Voila! Methicillin-resistant Staphylococcus aureus! With the new DNA in place, each subsequent generation of Staph will also be resistant. But do not think for one moment that MRSA is otherwise somehow different from Staphylococcus aureus. MRSA IS Staph. Staph with an added feature. </span>
<em>I hope this helps.</em>
<em>Answer:-</em>
<em>However, the movie's overt racism outraged African Americans and civil rights advocates. Blacks, particularly in the film's second part dramatizing Reconstruction, are portrayed as the root of all evil and unworthy of freedom and voting rights.</em>
<em />
Well even without prior research, our keyword is 'ranches' usually they will have crops and barns and such. But regardless, the answer is; (Edit.) The Spanish settlers in towns raised crops and animals to make money, and provide for their family rather than spending money on food everyday or week.
B) raising crops, cattle, and sheep
