Carl wants to know which sports drink is most effective at replenishing electrolytes during intense physical activity. He decides to test 4 different brands of sports drinks: Gatorade, Vitamin Water, PowerAde, and Propel Water. He tests the different sports drinks on the varsity boys swim team at his school. In his experimental group there are 5 different 17-year-old boys. They are all practicing for the 100-meter freestyle race. Each boy tests each of the different brands of sports drinks, and Carl measures their electrolyte concentration in their blood.

Independent Variable: The Electrolyte Drink

Dependent Variable: Concentration of electrolytes in their blood

Control Var 1: Measuring the concentration of electrolytes before drinking

Control Var 2: Using the same amount of drink for each player.

Control Var 3: Making sure they don't drink any extra water to dilute the concentration

I predict that of all the drinks, Gatorade will rank first, Powerade second, Propel third and vitamin water last.

coal is not sustainable because it will one day run out.

this protocol provides a detailed procedure for agarose-based ip to purify and enrich the protein of interest.