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Additionally, most schools calculate a student's grade point average (GPA) by assigning each letter grade a number and averaging those numerical values. Generally, American schools equate an A with a numerical value of 4.0. Most graduate schools require a 3.0 (B) average to take a degree, with C or C− being the lowest grade for course credit.
Twin studies provide a unique opportunity to explore the genetic and environmental influences on autism spectrum disorder (ASD). By studying identical twins, who share identical DNA, and fraternal twins, who share about half of their DNA, researchers can estimate the heritability of autism by comparing the rates of when one twin is diagnosed with autism while the other is not in identical vs ...
The percent of people reported as deficient was 5.9%. [12] Globally, vitamin C deficiency is common in low and middle-income countries, and not uncommon in high income countries. In the latter, prevalence is higher in males than in females.
A higher percentage of U-235 in the core at the beginning of a cycle will permit the reactor to be run for a greater number of full-power days. At the end of the operating cycle, the fuel in some of the assemblies is "spent", having spent four to six years in the reactor producing power.