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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.

What information is necessary in order to make a report on suspected domestic abuse? the unembellished facts or evidence you know about the patient’s permission regardless of age the relevant medical records if a patient is taking medication the consent of a parent or guardian if the patient is under the age of 18

He placenta begins absorbing nutrients and oxygen from the mother's body.