In this way, the distinction between a definition of morality and a moral theory parallels the distinction John Rawls (1971: 9) drew between the general concept of justice and various detailed conceptions of it.
Leaves are the site of the food making process called photosynthesis. In this process, carbon dioxide and water in the presence of chlorophyll (the green pigment) and light energy are changed into glucose (a sugar). This energy rich sugar is the source of food used by most plants.
photosynthesis Plants absorb sunlight and turn that energy into food; the process is known as photosynthesis. This is a compound word made up of photo (which means light) and synthesis (which means to put together). Think of a synthesizer, which puts together different sounds to produce music. A plant uses light to put together chemical compounds and turn them into carbohydrates: food. Although the word can be used to describe any process that uses light to connect compounds, the word is almost always used to describe a plant's method of making food.