What is one way to take care of earths water

By turning of the water when you shower, wash your hands, brush your teeth.

Explanation:

Making sure the water isn’t running for a very long time, take quick showers, and turn off the water as soon as possible

Well, first off the spongy mesophyll does have some chloroplasts, however they are located quite far from the surface of the leaf where most of the chloroplasts are. Therefore they don't get much light and don't contribute a lot to photosynthesis in the leaf. So why should the leaf waste the energy in making chloroplasts if there is not enough light to make them all efficient enough at photosynthesis?