What does the one stand for in 5210 and why

According to naeyc, are the youngest age group that may be out of the hearing range of supervising teachers for short periods of time. preschoolers infants kindergarteners toddlers

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 factors are contributing to the increase in obesity among children?