| We all live in a world that is covered mostly by | | | | Another problem will be an increase in |
| water. That is why it it is very important to preserve | | | | oxygen-consuming products. Most wastes need |
| our water resources. The ocean for example, is a | | | | oxygen to decay. If much oxygen is used up in the |
| valuable source of energy, food and mineral | | | | process, marine life will also be in danger. Last |
| resources. Rivers and other freshwater sources also | | | | problem faced is the accumulation of toxic chemicals |
| provide us with food and potable water. However, | | | | and minerals. This will include DDT, aldrin and dieldrin in |
| water pollution is now threatening human life as well | | | | water bodies. |
| as affecting the flora and fauna of the aquatic | | | | There are other examples of water pollution. One of |
| environment. This catastrophe is generally a | | | | these examples is the accumulation of mud and silt. |
| human-made problem. The amount of waste | | | | This will cause a coating to build up on the gill |
| materials introduced to the ocean yearly from | | | | filaments of fish and ultimately bringing about |
| factories, power plants and shipping industries is | | | | suffocation. Industrial and chemical wastes emptied |
| tremendous. Many of these products are found to be | | | | into our rivers and streams such as cyanides, acids, |
| carcinogenic. | | | | alkalies, oils, and pesticides, may affect not only the |
| As a consequence with this, greater problems have | | | | inhabitants of the body of water but also the ocean |
| been produced such as diseases from infectious | | | | into which the water flows. One disastrous case of |
| organisms carried within the water. It can also | | | | water pollution was that of a giant tanker Terry |
| produce an oversupply of plant nutrients. This means | | | | Canyon which, in March 1967, spewed about ninety |
| that it will accelerate the plankton growth, resulting in | | | | thousand tons of crude oil over the English Channel at |
| increased consumption of dissolved oxygen. With this | | | | south western Britain, destroying planktons in an |
| dissolved oxygen, our marine life will be threatened. | | | | aquatic area. |