The symptom that the client is experiencing is consistent with the deficiency in the Vitamin A which is a dietary element. The vitamin A is responsible for causing dryness to the eyes if a person is lacking this type of dietary element as Vitamin A is the one responsible for providing healthy vision for an individual.
Answer:
Natural Language Processing
Explanation:
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Nitrogen and Oxygen make up the greatest percentage of the atmosphere.
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Mainly by nitrogen-fixing bacteria in the soil and oceans