Explain your reasoning why limiting factors should not keep you from exercise. Include at least two physical, social, emotional, and intellectual benefits of exercise and relate this to chronic disease.

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.