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.
1 photosynthesis A chemical process used by plants and algae to make glucose and oxygen from carbon dioxide and water, using light energy. 2  Oxygen is produced as a by-product of photosynthesis. 3  stomata Tiny holes in the epidermis (skin) of a leaf-usually on the undersides of leaves.hotosynthesis. Plants make food using photosynthesis. This needs light, carbon dioxide and water. It produces glucose, and oxygen as a by-product. Leaves are adapted to carry out photosynthesis.