Can someone answer my last question about the soccer poster?

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.

Aperson has had a good _ of life if they are still at the age of 95.

Blank doctors keep consistent records because this terminology is standardized.