Examlex
Use the discriminant to determine what type of solutions exist for the quadratic equation. Do not solve the equation.
Selection
The process by which certain traits become more or less common in a population due to their effects on the survival and reproduction of their carriers.
Sickle-Cell Anemia
A genetic blood disorder caused by a mutation in the hemoglobin gene, leading to misshaped red blood cells that can cause health complications.
Africa
The world's second-largest and second-most populous continent, known for its rich cultural heritage, diverse ecosystems, and significant natural resources.
United States
A country located primarily in North America, consisting of 50 states and a federal district.
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