Multiple choice

Nitrates are useful for maximizing production of food. Yet, the extra nitrates we utilize in the fields mixed with drinking water results in

  1. converting nitrates into nitrites in stomach, which mixes with haemoglobin decreasing oxygen carrying process, which results in methaeglobinaemia

  2. killing intestinal bacteria

  3. producing more amino acids in the body

  4. interfering in enzyme production

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Explanation

Nitrates are useful for maximizing production of food. Yet, the extra nitrates we utilize in the fields mixed with drinking water results in converting nitrates into nitrites in stomach, which mixes with haemoglobin, decreasing oxygen carrying process. This results in methaeglobinaemia where methemoglobin is present higher than its normal level in blood.

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