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 uses light energy to make ATP from carbon dioxide and water while cellular respiration makes carbon dioxide while using glucose to make ATP.The CO2 is used by the plants while animals make CO2.hotosynthesis and cellular respiration are said to be reverse chemical processes because the reactants of photosynthesis are the products of cell respiration and the reactant â¦ s of cell respiration are the products of photosynthesis.