organisms, insects, reptiles, birds, mammal sand animals of diverse kinds. Each organism is a part of the forest ecosystem, and each reacts with all other organism.
Forests possess multi-layered structure termed as stratification. This makes available space for living for a wide variety of plant and animal species. For example, there are small, tender plants, that forms the lowest most layer. Then there are small shrubs which forms the second layer. A third layer may consist of small trees. And the tall trees that form roof or canopy of the entire vegetation may constitute the fourth layer. Various kinds of animal life, depending on their living habits, occur in different layers of vegetation.
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