What health risks will be reduced by doing regular 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.

What does cooper mean when she says “…non-nutrient foods are really, really cheap which is why i say it’s a social justice issue.” (7: 50 in video)

Which is the name of the pathogenic worm that lives on the muscles of some animals, such as pigs?