How does having the “necessary resources” to meet a challenge affect one’s reaction to stress?

Blood cells bring oxygen to cells and take carbon dioxide away. true or false

Exercise equipment compensates for acting irresponsibly are disregarding the rules of physical activity

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.