Why do you think someone would choose to be a nurse practitioner rather than a physician or a registered nurse? What advantages would there be? Disadvantages?​

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides.b) replication of their genomes does not involve proofreading.c) rna viruses can incorporate a variety of nonstandard bases.d) rna viruses are more sensitive to mutagens.