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the atmosphere (how the atmosphere supports life (gases for natural…

- - - - warm earths surface emits infrared radiation which cannot pass through the atmosphere as easily as visible light because it is absorbed by gases in the atmosphere (the greenhouse gases)
        
        greenhouses gases are any gases that are better at absorbing infrared than the average for the atmosphere
        
        the most important natural greenhouse gases are co2 and water vapour
        
        if there was no natural greenhouse effect, the mean temp of earths surface would be 33 degree colder
- - - - oxides of nitrogen - oxygen and nitrogen from the air react at high temp in locations such as vehicle engines and power stations - fertiliser use
        
        chlorofluorocarbons (CFC's) - aerosol - fire extinguishers - refrigerants
        
        tropospheric ozone - photochemical breakdown of NO2 and subsequent reactions of oxygen
- - - - precipitation changes may cause wetland habitats to enlarge or shrink
        
        deep root trees (oak trees) able to survive in droughts better than shallow roots (beech trees)
        
        dormouse hibernation may be disturbed by warmer winters, causing them to use up stored fat - starvation
        
        timing of ecological events such as flowering, migration and nesting may change
        
        distribution of species may change as conditions have changed and they colonise areas that have become more suitable