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.
Food Chains & Food Webs. 1  Plants are called producers because they are able to use light energy from the Sun to produce food (sugar) from carbon dioxide and water. 2  The process by which plants make food is called photosynthesis.3  Animals cannot make their own food so they must eat plants and/or other animals.ood Chains & Food Webs. 1  Plants are called producers because they are able to use light energy from the Sun to produce food (sugar) from carbon dioxide and water. 2  The process by which plants make food is called photosynthesis.