Answer:
the branch of public health concerned with monitoring or mitigating those factors in the environment that affect human health and disease
Explanation:
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There is a thing called periodic episodes of pain, called crises and they are a major symptom of sickle cell anemia. Pain tends to develop when sickle<span>-shaped red blood </span>cells<span> block the blood flow through little tiny blood vessels which go to your chest, abdomen and your joints. Also, sadly, pain can occur.</span>
