Why do plants need the sun to grow

What is photosythesizing

Energy received from the sun is used to convert carbon dioxide and water into food. When plants do not receive the things they need to live and grow they pretty much die

Photosythesizing:
To perform the process of photosynthesis.
But photosynthesis. Is when plants make there own food. Glucose to be more exact

And if this was for homework your not suppsosed to be coming here for homework help I think.