Context: Symptoms of mild zinc deficiency are diverse. Clinical outcomes include depressed growth, diarrhea, impotence and delayed sexual maturation, alopecia, eye and skin lesions, impaired appetite, altered cognition, impaired host defense properties, defects in carbohydrate utilization, and reproductive teratogenesis. Mild zinc deficiency depresses immunity, although excessive zinc does also. Animals with a diet deficient in zinc require twice as much food in order to attain the same weight gain as animals given sufficient zinc.

Question: Symptoms ranging from diarrhea to eye lesions are from what?
Answer: mild zinc deficiency

Question: What is a symptom of both zinc deficiency and excess?
Answer: depresses immunity

Question: What is required for animals with zinc deficiency to gain the same weight as animals with sufficient zinc?
Answer: twice as much food

Question: What prevents symptoms ranging from diarrhea to eye lesions?
Answer: Unanswerable

Question: What is not required for animals with zinc deficiency to gain the same weight as animals with sufficient zinc?
Answer: Unanswerable

Question: What is no longer a symptom of both zinc deficiency and excess?
Answer: Unanswerable

Question: Why do animals not consume zinc in their diet?
Answer: Unanswerable