Which is NOT true about ozone A.
produced by plants
B.
beneficial when in the stratosphere
C.
it is a greenhouse gas
D.
in the troposphere it is an eye and respiratory irritant

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.