1. Wind speed Feeding Temperature Predation Atmospheric humidity Mutualism Water supply Parasitism Inorganic ions O2 concentration Light intensity CO2 pH concentration Competition Edaphic (e.g. Soil aeration, particle size) BIOTIC FACTORS ABIOTIC FACTORS What do these abiotic factors affect?

2. Growth of plants Transpiration Rate of metabolic reactions Rate of photosynthesis and animal behaviour Rate of photosynthesis Rate of evaporation Rate of respiration in roots All organisms Aerobically respiring organisms Organisms living there

3. BIOTIC FACTORSABIOTIC FACTORS Feeding Predation Parasitism Mutualism Competition Temperature Light intensity O2 concentration CO2 concentration Water supply pH Inorganic ions Edaphic factors Atmospheric humidity Wind speed

4. BIOTIC FACTORS ABIOTIC FACTORS What do these abiotic factors affect? Feeding Predation Parasitism Mutualism Competition Temperature Light intensity O2 concentration CO2 concentration Water supply pH Inorganic ions Edaphic factors Atmospheric humidity Wind speed Rate of metabolic reactions Rate of photosynthesis and animal behaviour Aerobically respiring organisms Rate of photosynthesis All organisms Organisms living there Growth of plants Rate of respiration in roots Rate of evaporation Transpiration

5. POPULATION ECOSYSTEM NICHE DECOMPOSERS MUTUALISM HABITAT PARASITISM COMMUNITY EDAPHIC