Hemoglobin SS and sickle beta zero thalassemia are the most severe forms of sickle-cell disease and are sometimes referred to as sickle cell anemia. Hemoglobin SC disease is considered moderate and in general, sickle beta plus thalassemia is the mildest form of sickle-cell disease.
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Answer:
Both are a form of reproduction
Explanation:
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Most of the nitrogen in earths atmosphere comes from bacteria.