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.
Water pollution is a major problem we face today. Here are some ways to prevent it. Advertisement. Although it covers more than 70% of the surface of the Earth, water is one of the most precious natural resources of our planet.ome of the other causes of pollution are oil spillages and dumping in oceans, dumping litter into streams, rivers, and oceans such as cardboard, newspaper, foam, Styrofoam, plastic packaging, aluminum, glass, and so on. Some of these pollutants take a very long time to degrade.