Wolves use both auditory and visual methods to communicate with their pack. Auditory methods of communication include howling, growling, and whimpering. Visual methods of communication include pinning their ears back, tucking their tail, making direct eye contact, and showing their teeth. What is one advantage of using an auditory method of communication instead of a visual method of communication?
A. Only an auditory method can let the pack know that the wolf is scared. B. Only an auditory method can let the pack know the wolf is about to attack.
C. Only an auditory method can help find pack members that are far away. D. Only an auditory method can help the pack find new sources of food.

Look at the photo of the leaf. which term best describes this leaf?

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer