I want to know

Well ill try and explain but I don't know if you will understand as I don't know how old you are. Plants require carbon dioxide(a gas) and water to create food. Water is taken up through the roots and up the stem into the plants leaves. Carbon dioxide is taken into the plants leaves through little pores. For photosynthesis to occur (the process that creates food for the plant), the plant needs sunlight and chlorophyll. (Green pigment in leaves that can take in sunlight) Energy cannot be created or destroyed, so the plant needs to convert it, using sunlight (light energy). Carbon dioxide and water react to produce simple sugars(chemical energy) which the plant uses to build new structures such as roots or leaves. Can you get any of that?:confused:

Or, in summary, plants use the energy in sunlight to combine carbon dioxide (from the air) and water to make sugar.

Sugars are food, both for the plant and for us when we eat plants. Sugar is how all living things store energy. All that energy came from the sun.