Biology project is an effective teaching tool used by educators both at schools and higher educational facilities to foster classroom participation and increase students’ interest in a particular topic. Thus, the complexity of biology projects topics depends on the academic level. There are many ways of how to create a biology project. However, biology projects topics usually consist of a brief description of the issue, a research, and a conclusion. There is a variety of interesting issues to research, that is why it is easy to choose biology projects topics that is both engaging and relevant.
Water pollution occurs when substances have built up in water sources, such as oceans, seas, rivers, lakes, and ponds, to the extent that they may be hazardous to human health, harm living resources, or affect marine activities such as fishing. It usually happens when factories release a significant amount of pollutants into the water.
Types of Water Pollution
The most common type of water pollution is the pollution of surface waters, such as rivers, lakes, and oceans. This kind may include oil spills made by tankers and affects great areas in the ocean. The second type is the pollution of groundwater. It may occur when, for instance, pesticides drain into the ground. Although the groundwater pollution is not as obvious as the first type, it presents a substantial problem as well.
Moreover, pollution may come from a single location, such as an oil spill or a factory discharge pipe, or it may come from many different sources. These two kinds are called the point-source pollution and nonpoint-source pollution correspondingly. When the pollutants from the former type enter the environment, they affect mostly the area immediate to the source. On the other hand, the pollutants from the latter source enter the environment in many places at once. However, there is another type of pollution called the transboundary pollution, which may affect the environment even thousands of miles away from the source.
Causes of Water Pollution
One of the reasons why the issue of water pollution is difficult to solve is the fact that it does not have a sole origin. One of the major causes of the pollution is sewage. Billions of people in the world have no access to clean water and proper sanitation facilities. As a result, sewage disposal leads to different water-related diseases, such as diarrhea, hepatitis A, or salmonellosis. However, in developed countries, the sewage issue stands in a different light. Even with modern technologies, thousands of tons of raw sewage, which may contain chemicals, plastic, paper, and numerous viruses, are dumped into the sea each day.
Another major cause of pollution is waste water. According to estimates, about 5-10 billion tons of industrial waste are generated each year. Much of that amount is pumped untreated into oceans, rivers, and other water sources. Oil pollution, the leading contributor to the contamination of the oceans and seas, consists of several types. Surprisingly, the oil spills, which come from tanker accidents, make up only 12% of the total amount. However, an oil spill is still dangerous as it involves polluting a small water area with a large amount of oil. More than 70% of the oil pollution of the sea is caused by the oil that people pour down their drains and by oily waste spilled during routine shipping.
All in all, water pollution poses a threat to the well-being of humanity and the planet. It is caused by major pollutants, such as industrial waste, oil, and sewage, accumulated in the water in such amounts that cannot be dispersed. Although there is no easy way to resolve the issue, education and regulations, can help people to influence the extent and effects of water pollution.
Useful samples and examples: https://essays.io/resume-examples-samples/