Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. this chemical en- ergy is stored in carbohydrate molecules, such as glucose (c6h1206), which are synthesized from carbon dioxide (co2) and water (h2o) — hence the name photosynthesis, from the greek võs, phos, "light," and oúvoeois, synthesis, "putting together." in most cases, oxygen (o2) is also released as a waste product. photosynthesis is largely responsible for producing and main- taining the oxygen content of the earth's atmosphere, and supplies all of the organic compounds and most of the energy necessary for life on earth. balance the overall chemical reaction for the type of photosynthesis that occurs in plants: a co2 + b h20 "$, y c6h1206 + z02. in other words, find the smallest possible positive integer values for the variables a, b, y, and z.