Explain how you can decrease the risk of developing smoke related cancers

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.

Heat affects all vitamins. which vitamins are more sensitive to heat and leach into water? a. vitamin a and d b. vitamin b and c c. vitamin e and k d. vitamin d and c

Subjective observations are not used under diagnosis, but objective observations are. true or false