Brainliesttt ! 1. the chemical equation shown represents photosynthesis. carbon dioxide plus a plus light with a right-pointing arrow towards b plus oxygen. the arrow has an x above it. what is the role of substance a in photosynthesis? it stores chemical energy for plants and animals. it traps light energy and converts it into chemical energy. it combines with carbon dioxide and light to form glucose. it combines with carbon dioxide and light to form hydrogen. 2. the balanced equation for photosynthesis is shown below. 6 co2 + 6 h2o → c6h12o6 + 6 o2 using the above equation, how would you prove the law of conservation of mass? by showing that the numbers of atoms of different types are equal on both sides. by showing that the numbers of atoms of the same type are equal on both sides. by showing that the numbers of atoms of different types are not equal on both sides. by showing that the numbers of atoms of the same type are not equal on both sides.