A firearm safety: a. can take the place of safe firearm handling
b. ensures that a firearm will not fire accidentally
c. should be released as soon as you spot your quarry
d. is a mechanical device that could fail

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.