Cystic fibrosis is caused by O damaged alveoli.
fluid-filled sinuses.
O fever.
O
genes.

How could natural selection best be used to explain the evolution of the white fur of arctic fox

Aperson is most likely to recover from a viral infection if the infected cells ) can undergo normal cell divisionb) can carry on translation, at least for a few hoursc) produce and release viral proteind) transcribe viral mrna

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.