Two reasons: Aspirin has a direct potentially erosive effect on the stomach lining causing the lining to become inflamed , especially on an empty stomach and thus can contribute to creation or perpetuation of a breach in the stomach lining (an ulcer).
Photosynthesis is a process used by plants in which energy from sunlight is used to convert carbon dioxide and water into molecules needed for growth. These molecules include sugars, enzymes and chlorophyll.
RESPIRATION, MAKING FRUITS, MAKING CELL WALLS, MAKING PROTEINS, STORED IN SEEDS AND STORED AS STARCH. PLANTS MAKE GLUCOSE IN THEIR LEAVES AND THEY USE SOME OF IT FOR RESPIRATION. THIS RELEASES ENERGY WHICH ENABLES THEM TO CONVERT THE REST OF THE GLUCOSE INTO VARIOUS OTHER USEFUL SUBSTANCES.