What is the natural community
Natural communities (biocenosis) - is the unity of animate and inanimate nature, which is formed in certain environmental conditions. In these communities every single body in a certain way affects all the others, and also suffers from the impact. This existence is useful to the whole community and each individual mind. Examples of natural communities - meadow, swamp, steppe, desert, ocean.
Each of them inhabit its inhabitants. For example, only in the desert meet the saiga, gopher, feather or Kipchak. Forest animals are unlikely to see the ocean, and sea fish can not live in a freshwater lake. Each animal species adapted to living in certain natural community. There he finds enough food, and the conditions for normal life. Communities - not random formation. Living beings and their environment are a constant exchange of matter and energy. They provide each other practically everything necessary for life. Interaction types ensures optimum use of community resources, limiting the uncontrolled multiplication of various organisms. Destroying handicapped, sick animals, predators contribute to a healthier population. Thus is formed a special living system with its own structure, relationships, and development functions. The amounts of matter and energy needed for living organisms, are extremely high. Absorbed from the environment constantly nutrients are returned as a result of ability to live organisms. They undergo various transformations, eventually breaking down into simpler compounds. As such, they can be absorbed by plants. That is, there is a sustainable material cycle. Each natural community is characterized by a certain set of species. The favorable environmental conditions of the area, the richer species composition inhabiting it. For example, rich wildlife and lush vegetation of the tropics with incomparable uniform flora and fauna tundry.Takie communities are not isolated, they interact with others, forming a holistic system with a higher level of the organization - ecosystem. All natural ecosystems are interconnected and form the living skin of the Earth - the biosphere.