Answer:
A (Solution 1)
Explanation:
Since both solutions have an equal volume but Solution 1 has a greater amount of solute (100 g in Sol. 1 > 90 g in Sol. 2), Solution 1 is more concentrated.
They are called essential because unlike the other ten unessential ones, they cannot be produced in our bodies. They must be obtained in our diet.
Fitness =being healthy adaptations=being able to adapt to your surrondings
The answer is B to the question