Explain the four parts of prioritizing goals

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

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.

Someone pls ill mark you brainliest * drivers ed * driving above the posted speed limit is a. legal when traffic is flowing above the limit b. legal when you are passing another vehicle c. legal when there are no other road users in sight d. illegal no matter the conditions