Tetanus, also known as lockjaw, is an infection characterized by muscle spasms. In the most common type the spasms begin in the jaw and then progress to the rest of the body. These spasms usually last a few minutes each time and occur frequently for three to four weeks.etanus occurs in all parts of the world but is most frequent in hot and wet climates where the soil contains a lot of organic matter. In 2013 it caused about 59,000 deaths â down from 356,000 in 1990. Description of the disease by Hippocrates exists from at least as far back as the 5th century BCE.
The water resources of China are affected by both severe water quantity shortages and severe water quality pollution. A growing population and rapid economic development as well as lax environmental oversight have increased water demand and pollution.
The two chief sources of water pollution can be seen as Point and Non Point. Point refer to the pollutants that belong to a single source. An example of this would be emissions from factories into the water. Non Point on the other hand means pollutants emitted from multiple sources.ollution of water occurs when substances that will modify the water in negative fashion are discharged in it. This discharge of pollutants can be direct as well as indirect. Water pollution is an appalling problem, powerful enough to lead the world on a path of destruction.