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.
Glucose helps plants to have strong cell walls and tissues. The plant uses part of its glucose supply to form fiber, or cellulose. Besides giving the plant structure in the stems and leaves, plant cellulose provides humans and animals with an important source of dietary fiber. Plants also transform glucose into starches and fats.