Read the following statements carefully and select the incorrect ones.
(i) Development of the fertile top-soil takes centuries, but it can be easily removed due to human activites such as over-cultivation, unrestricted grazing, etc.
(ii) Waterlogging results in soil salinity.
(iii) UV rays are responsible for degradation of ozone shield in atmosphere.
(iv) Ozone present in troposphere acts as a shield abosrbing UV radiations coming from the Sun.
(v) Global warming can be controlled by increasing the use of fossil fuels.