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.
Phytoplankton produce oxygen through photosynthesis. Photosynthesis is the process that plants use to produce their own food. During photosynthesis plants use the energy from the sun to convert carbon dioxide from the air into sugar molecules.