Chase has had difficulty sleeping recently and gets frequent sinus headaches. he discovered that he is squinting more when he reads. his grades at school have also been dropping. which symptom might warrant a trip to an eye specialist? difficulty sleeping, falling grades in school, frequent sinus headaches, or squinting more while reading?

Explain why methicillin resistant staphlococcus aureus (mrsa) is more prevalent now than it was only 30 years ago. a. antibiotics cause mutations in staphlococcus aureus that lead to an increase in the number of methicillin-resistant strains. b. methicillin resistance causes an infection to spread more rapidly.c. frequent and inappropriate use of methicillin-type antibiotics has provided selective pressure that has resulted in an increase in the proportion of methicillin-resistant strains of staphlococcus aureus.d. diseases like aids have made people more vulnerable to infections from staphlococcus aureus.