If your clothing catches fire, you should.
a. stop, drop, and roll.
b. run outside.
c. stay low and run to escape flames.

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.