Tourism

Tourism is traveling for the most part fun or vacation purposes. According to the World Tourism association, tourists are public who "travel to and stay in places outside their usual location for not more than one repeated year for vacation, business and other purposes not related to the use of an activity compensated from within the place visited".
Tourism has happen to a very popular, overall activity. In 2004, there were over 763 million international tourist arrivals. Major physical elements include transportation, lodging, and other components of a hospitality industry.

Tourism is very important for many countries, due to the earnings generated by the spending of supplies and services by tourists, the assessment levied on businesses in the tourism industry, and the opportunity for employment and financial development by working in the industry. For these reasons, NGOs and government agencies may sometimes sponsor a specific area as a tourist intention, and support the development of a tourism industry in that area.

Aquarium

The aquarium has a long history and maintaining an aquarium has become immensely popular worldwide. Aquaria can come in a variety of materials, shapes, and sizes. They are classically constructed of glass or high-strength plastic. Cuboid aquaria are also known as fish tanks or simply tanks, while bowl-shaped aquaria are also known as fish bowls. Size can range from a small glass bowl to enormous public aquaria. A number of apparatus are used to maintain appropriate water quality and uniqueness suitable for the aquarium's residents. There are many types of aquaria, classified by the organisms maintained or the type of surroundings that is mimicked.

Grass

In tennis, grass is grown on very hard-packed soil, and bounces may vary depend on how healthy the grass is, how recently it has been mowed, and the wear and tear of recent play. The most famous grass tennis court in the world is Centre Court at Wimbledon. Tennis, however, is generally played on clay courts, and only a a small number of regular tennis tournaments are played on a grass court. The exterior is less firm than rigid courts, causing the ball to spring back lower, and so players must reach the ball quicker. Due to high maintenance costs however, grass courts are now rare as they must be watered and mowed often, and take a longer time to dry after rain than hard courts.

Desalination
Desalination refers to any of several processes that remove the excess salt and other minerals from water in order to obtain fresh water suitable for animal consumption or irrigation, and if almost all of the salt is removed, for human consumption, sometimes producing table salt as a by-product. Desalination of brackish water is already commonplace in the U.S., where it is used to meet treaty obligations for river water
entering Mexico. Indeed, desalination has spread into use in over a hundred countries, with Saudi Arabia accounting for about 24% of total world capacity. Kuwait built the world's first large-scale desalination plant in the 1960s. Kuwait's energy reserves are so great that Kuwait is unique in using desalinated water for agriculture. The world's largest desalination plant is in Ashkelon, Israel. It began operating on August 4, 2005, and it is capable of producing 100 million cubic meters of water per year.