Why is it important to relax before bedtime?

How will your health most likely be affected if you follow the recommended guidelines for sleep, rest, and physical activty

The charge for office visit or procedure usually includes

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.