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.
During photosynthesis, chlorophyll, which gives plants a green pigment, converts sunlight energy into chemical energy stored in adenosine triphosphate (ATP) molecules. These molecules contain the sugar ribose and the phosphates plants need to power metabolic functions.