The basic movement of carbon from the atmospheric reservoir to green plants and then to animals and from both these groups to decomposers and finally bakc to the atmosphere is shown in a cyclic manner. The deposition of coal and gas buried in soil as fossil fuel is very well shown.

Atmospheric nitrogen fixation by free living micro organisms like the blue green algae, rhizobium and the complexities of nitrogen cycle through ammonification, nitrification and denitrification processes involving various micro organisms is depicted with self explanatory illutrations.

A unique graphic explanation of the Oxygen Cycle, its role in phoosynthesis and respiration among plants and animals, diffused oxygen in water and its uptake by aquatic life is artistically portrayed.

An exciting chart where the ecological aspects of a pond are portrayed with biotic and abiotic factors. Producers, herbivores and consumers of food are depicted within the various zones of the pond.