Which of the following will you reduce motor-vehicle-related violence? a. drive and park in safe, well-lit areas. b. resist with everything you have when faced with a carjacker. c. leave your child alone in the car while you go into the gas station. d. leave your keys in the ignition and the engine running while you go into the convenience store.

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.