Why does my whole body hurts for no reason if im young?

Does nicotine show up in a drug test when u pee in the cup

Elderly nursing home residents tend to decline faster and die sooner than they would otherwise if they lacka)biofeedback.b)mindfulness meditation.c)perceived control.d)type a personalities

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.