The Need of Vitamin C 

          It is reported that there are many significant effects of vitamin C on health. First of all, vitamin C works as an antioxidant to help cell and tissue damage. In addition, it protects body from infection in case of sickness. Moreover, it is necessary for both the expectant mother and baby to stay healthy during nine months of pregnancy. Furthermore, it helps inner-body destruction. Finally, it is essential for collagen formation that gives structure to bones, cartilage, muscle and blood vessels (Hareyan: 2005: 1).

Reference:

        Hareyan, A. (2005). Why do we need vitamin C? [Online]. Available:    

                    http://www.emaxhealth.com/76/1144.html [15 January, 2012].

Climate Change

          It is said that there are many causes and effects of the climate change people have to comprehend. Firstly, rising temperatures cause several harsh weather conditions. Secondly, melting ice and glaciers could result in higher sea level. Thirdly, changing of the climate could also affect health and wellbeing of humans (Congondis, 2011: 1-5).

Reference:

          Congondis, D. (2012). Fact about Climate change. [Online]. Available: 

                     http://www.thegreatwarming.com/pdf/ClimateChangeFactsheet.pdf. 

                      [2011, August 28].

Computers under Attack

        It is said that the computer virus can be classified into three kinds that make havoc for any users; Trojan Horse, Spyware, and Spam. A Trojan Horse is created to steal credit card details or bank passwords. A Spyware stores the computer’s owner information and submits to commercial companies. A Spam tempts people and takes money from them (Philpot, 2011: 47).

Reference:
          Philpot, S. (2011). “Computers under Attack.” Academic Skills. Oxford: Spain