Equation for photosynthesis: Carbon dioxide + water + light energy ---> glucose + oxygen
Equation for respiration: Oxygen + glucose ----> carbon dioxide + water + energy (Atp)
From the above equations, we can see that the equation of photosynthesis and cellular respiration is REVERSED /flip over (or vice versa).
The rate of photosynthesis of a plant has to depend on the light source provided, the more light they absorb, the higher the photosynthesis rate it. But a plant is always undergoing cellular respiration. No matter light or dark.
Usually simply by mixing with more solvent like adding more water to the solution. To dilute a solution means to add more solvent without the addition of more solute.