Staph infections caused by the bacterium staphylococcus aureus are increasing in frequency and are more difficult to treat with antibiotics. many staph infections are now caused by mrsa and methicillin resistant strain of s. aureus. what explains the more widespread phenomenon of mrsa prevalence in staph infections?

preservation because he preserves part of the land and preserves means save

explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

yo

c is the correct answer!