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Environment Science Page 6
Almost 99% of clean air consists of two gases which are;
|A. Nitrogen and Carbon Dioxide.|
|B. Oxygen and Argon.|
|C. Oxygen and Carbon Dioxide.|
|D. Nitrogen and Oxygen.|
Ozone layer exists in;
Ozone layer is being depleted by;
|B. Sulphur dioxide.|
|C. Carbon monoxide.|