What three things are needed for photosynthesis to occur? carbohydrates, sunlight and water water, oxygen, and carbon dioxide sunlight, carbon dioxide, and water decomposers, nitrogen, and phosphorous

The correct answer is **sunlight, carbon dioxide, and water**.<br /><br />Photosynthesis is the process by which plants convert light energy into chemical energy. This process requires:<br /><br />* **Sunlight:** Provides the energy source for the reaction.<br />* **Carbon dioxide:** Taken in from the atmosphere through the stomata (small pores) in the leaves. It provides the carbon atoms used to build sugar molecules.<br />* **Water:** Absorbed from the soil through the roots and transported to the leaves. Water provides the hydrogen atoms needed to build sugar molecules and also plays a role in the light-dependent reactions of photosynthesis.<br />