Photosynthesis is the process by which sunlight is used by green plants and certain other creatures to manufacture food from carbon dioxide and water. The presence of the green pigment chlorophyll and the generation of oxygen as a byproduct characterize photosynthesis in plants.
Intersectionality is a theoretical framework for understanding how aspects of one's social and political identities might combine to create unique modes of discrimination. For example, a black woman might face discrimination from a company that is not uniquely due to her race nor her gender.