They can keep organ tissue alive for transplantation.
C because cellular respiration uses combine oxygen and other toxic waste.
It should be Ozone, hope that helps.
Trees release CO2 which is Oxygen.
Plants release water vapor through Photosynthesis.
Answer:
C. break hydrogen bonds between complementary nucleotides; the job of DNA helicases is to separate the two strands of a DNA molecule to allow DNA pol III to do its job in synthesizing the complementary DNA strands.
