4.1 Ecosystems

Ecosystem: '' Community of organisms in a habitat ''

     -> Community of Organisms
             Populations of different species & interactions
              - Number of individuals of a particular species
              - Organisms that reproduce to give fertile offspring
              - Feeding (food chain)


     -> Habitat
            Abiotic: non-biological factors
            - Cycle of daylight (photoperiods)
            - Temperature: local/seasonal/annual cycles
            - Rainfall
            - Humidity
            - Slope of land/geology