Question

why would the methylene blue put in the water eventually move everywhere in the tank? because the concentration of methylene blue is lowest where the drops went into the water and will spread to areas with higher concentrations. because the concentration of methylene blue was highest where the drops went into the water and will spread to areas of lower concentration.

Explanation:

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Methylene blue in water spreads out due to this principle.

Answer:

Because the concentration of methylene blue was highest where the drops went into the water and will spread to areas of lower concentration.