1. Sunlight: Sunlight provides the energy that drives the entire process of photosynthesis. Plants use pigments like chlorophyll to capture light energy.
2. Carbon Dioxide: Plants obtain carbon dioxide from the atmosphere. This is the source of carbon that is used to build sugars, the primary energy source for the plant.
3. Water: Plants absorb water from the soil through their roots. Water is used in the chemical reactions of photosynthesis and also helps transport nutrients throughout the plant.
