abiotic and biotic factors

• abiotic factors are factors in the environment that are non-living (physical factors)
• climatic factors

  light, temperature, rainfall, wind, availability of water
• edaphic factors

  pH, texture, temperature, organic and mineral content
• aquatic factors

  salinity (salt), wave action, dissolved oxygen
• topographic factors

  angle of the earths surface
• biotic factors are the living organisms that shape its environment, such as predation, symbiosis, competition, diseases