Question

To determine which colors of light are best used by plants for photosynthesis

Answer 1

We can determine that by doing an experiment. We can put each aqua plant (same species, same size) into bottles of full water, then shine different colors of lights on each bottle. The faster the rate of photosynthesis, the more oxygen the plant release. Therfore which bottle has the less water at the end, the better the light it is.