From 10 kilometres of ocean floor up about to 10 kilometres of atmosphere known as the feeding place of all living beings. This area is called as biosphere in world's layers. Ecology deals with living beings and their interactions with each other in this vertical 20 kilometres area. Currently, ecology gains in importance. Humans use soils to grow crops as they pollute the environment with industrial wastes for centuries, although water and the atmosphere are essential components of human sustainability. Ecology teaches us to live in harmony with the environment and humans should know that it is beneficial for humans to live sustainably in interactions with the environment in the long run.