I had a abnormal c x-ray it showed a density in the retrocardic area of lungs what does it mean? Dr. John Chiu Dr. Chiu See doctor: You need to discuss this with your doctor since there are many types of densities which signify different things.
Relevance. Rating Newest Oldest. Best Answer: As said before, photosynthesis does not produce water, it uses the sun's energy to combine carbon dioxide and water to produce carbohydrates and gives off oxygen as a by-product.
Photosynthetic plants are the only producers that can produce food by using water and minerals from soil, carbon dioxide from air, and energy from sunlight in the presence of chlorophyll and other photosynthetic pigments in the photosynthetic regions such as leaves and young greeny tender stems.