Water Tempature Affects Plants

With Water.. if it too warm the process isn't as good as if temperature was mild.. since it uses a lot of energy if it's too hot or too cold... to cool it down for its photosynthesis process. Plants need both light and water in the process. When water is cold or at freezing temperature the photosynthesis process slows down due to the lack of energy being used as if it were to be hot.