Marc has started drinking whenever he is upset or stressed. when his friends ask him how much he drinks, he lies and makes excuses. he sees alcohol as an escape from his everyday problems. which stage of alcoholism is marc most likely in?
a. problem drinking
b. dependence
c. last stage

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.