The greatest source of air pollution in the united states is automobiles electric utilities forest fires industrial burning of fossil fuels

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What are 3 important public health tools for addressing flu outbreaks and why

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.