What prevents antibiotics from being effective against viruses?
a. viruses have a high rate of mutation.
b. viruses have no rna.
c. viruses have no metabolism.
d. viruses have a protein shell that protects them.

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

What would happen if the krill were removed from the food web

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.