Carbon Cycle and Fossil Fuels

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Multiple Choice

Which one of the following statements regarding CO gas is correct ?

  1. It is produced by the complete combustion of fossil fuels.
  2. It combines with haemoglobin to form carbamino-haemoglobin.
  3. It impairs oxygen transport resulting in giddiness, headache, asphyxia and even death.
  4. All of these
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