FoodChain

Food chain is a sequence of organisms in a community each of which uses the next lower member of the sequence as a food source, plants being at the base of the sequence. In other words, food energy passes from plants to animals in a long chain called the food chain.
Green plants take in water and carbon dioxide. In the presence of sunlight and chlorophyll, these are converted to sugars which are plants food. Herbivores such as cattle or antelopes eat the plants. Herbivores are in turn eaten by the meat eaters (carnivores) such as foxes, tigers and lions. Similarly, there are plankton in the seas and oceans which use sunlight to help them make their food. Fish, shellfish and other crustaceans eat the plankton. These animals are eaten by bigger animals such as sharks and whales. Whales are killed by man for meat.
After the nutrients have been used by plants and animals in a food chain they are returned to the soil or water through animal wastes that decay through bacterial action.
Basically in all food chains, the input will be solar energy into the system as light and heat, which will be utilized by autotrophs and this process called photosynthesis.Carbondioxide and water will be reduced to sugars, which will be capable of storing the solar energy