The need of Vitamin C

It is reported that vitamin C has many imperative effects for physical health. Balancing free radicals to fight cell and tissue destruction, helping the body resist infection in case of illness, holding new cells jointly for both the expectant mother and infant, repairing inner-body's harm, and forming collagen that provides structure to bones, 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

      

      There are various reasons of the weather conditions that everyone has to realize. Rising temperatures cause violent change of weather, the ocean levels all around the world increase as a result of dissolving ice and large mass of ice , and climatic change negatively influences physical health and welfare of people (Congondis, 2011: 1-5).

Reference:
Congondis, D. (2011). Fact about Climate change. [Online]. Available:

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

 [ 2011, August 28].

Computers under Attack

      It is said that there are three kinds of virus that cause difficulties for people who use computers. A Trojan Horse is created to take particulars of bank card or bank-secret words, a Spyware is a jeopardy virus which assembles data about the computer's proprietor, and a Spam is the less destructive trouble that someone are now applying it to defraud people and to take money from them (Philpot, 2011: 47).

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