A local magazine sells space for ads. It charges advertisers based on the fraction of a page purchased. 1) Advertisers buy 1/8 & 1/16 of page 20. What fraction of a page is used for ads? 2) What fraction of page 20 is available for other uses? * Plz help

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.