see
http://www.plantingscience.org/index.php?module=pagesetter&func=viewpub&tid=2&pid=1025For more info
threw photosynthysis
Suger.
Plants add oxygen to the atmosphere during photosynthesis or food making.
Plants use sunlight, CO2 and H2O to produce sugars (food).
during photosynthesis
Lack of sunlight.
Glucose in the first instance.
Carbon Dioxide (CO2)
What Plants Need to Make FoodPlants make food from carbon dioxide and water during photosynthesis.
plants can make food through photosynthesis
In a photosynthesis sun light and water are used to make food for plants (except plants at the bottom of the sea).
The process in which plants make their food is known as photosynthesis.