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Pox viruses are_________?
  • (A)  RNA non-enveloped
  • (B)  RNA enveloped
  • (C)  DNA non-enveloped
  • (D)  DNA enveloped
It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:
  • (A)  Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
  • (B)  Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
  • (C)  Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
  • (D)  Older sediment layers did not have these radioactive isotopes