The tooth is made of -like materials.

Which of the following does not cause blindness? a. cataractsb. glaucomac. osteoarthritisd. diabetes

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.

The centers for*blank* control and prevention safeguards americans from health, safety, and security hazards and threats.