Based on the graph, an accurate prediction of the average sodium concentration at 210 minutes for athletes who drank the sports drink would be expressed numerically as blankk mmol/l.

Based on the graph, an accurate prediction of the average sodium concentration at 210 minutes for athletes who drank the sports drink would be expressed numerically as 140mmol/L (It could be any number in the interval between 135 and 145mmol/L).

Sodium is an alkali metal, It is located in the extra-cellular cation (90% extra-cellular) there are very few in the cell. (its normal value is between 135 and 145mmol/L in the blood)
A sports drink is a drink which helps athletes replace water, electrolytes, and energy lost during sports. So in the graph, it is logical to see that the athlete restore his sodium level after drinking.

Cwould most likely affect a cow's offspring.hope this 's and give me brainiest!  

As what he you go get the hot dog ; )