Chemistry
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?

Carbon dioxide
Chlorofluorocarbons
Nitrous oxide
Sulphur dioxide

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Chemistry
The main use of salt in the diet is to

increase the solubility of food particles in water
produce in small amounts the hydrochloric acid required for the digestion of food
ease the process of cooking
make the taste of food better

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