Every animal or human lives in their surrounding atmosphere.The atmosphere includes all the physical, chemical, biological and soil factors which affect the living beings. Maybe this effect either directly or indirectly. This is important for every living being for his daily working.
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In the atmosphere a huge number of factors. These factors do not affect individually rather than it affects together. Thus changes in one factor may change to others. Because of these factors, Various part of the world has various type of plants.

There are 4 categories of factors

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• Climate Factors-
  It includes plants air and atmosphere. Factors in this category are following
  Light, Temperature, Water & Rain Atmosphere Humidity, WInd.

• Topographic Factors-
  It includes the upper layer, size shape of the earth.Factors in this category are following
  Altitude, Slope, Exposure

• Edaphic Factors-
  According to this factors physical and chemical factors comes into account.Factors in this category are following
  Mineral Matter, Organic Matter, Algae, Soil Water, Soil Air, Soil Organisms Soil Reaction.

• Biotic Factors-
  The activities of Plants, Animal, Human and many small living beings include in this factors.Factors in this category are following
  Micro-organisms, Bacteria, Fungi, Grazing Animals, Parasitism, Symbiotism, Saprophytism, Epyphytism, Insectivorous Plants.

Sources

Image sources-
https://pixbay.com

Content Sources-
Baudhik Prakshan Book for UPSC and UPPSC.

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