Americans spend almost percent of their food budget on foods prepared away from home. Question options: 20, 30, 40, 50

Prescription drugs account for 25% of all healthcare-related costs. true or false

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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.