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.
Photosynthesis used the products of cellular respiration. It converts energy from sunlight into sugars. Cellular respiration needs the products of photosynthesis. in photosynthesis, the plant does not make energy but just transforms light energy into food energy (convervation law 1 ).