Postings without closing dates are often positions that are difficult to fill or ones that come open frequently. An example of a position that is difficult to fill is a psychologist at a small-town state hospital. If the hospital left the job open for a month, it is unlikely to get a sufficient number of applicants.
The Disadvantages of Tidal Power Tidal power is growing rapidly in interest as countries look for ways to generate electricity without relying on fossil fuels. Tidal schemes have a number of advantages, including their lack of greenhouse gas emissions and 100% renewable nature.
Tidal energy is an nonpolluting inexhaustible energy source. However, its use is limited because it needs a large bay or estuary with a narrow outlet to the sea where there is fast moving water.There are not many suitable locations around the world for tidal power technology as it exists today.idal power is a renewable source of energy. It relies on the gravity of the moon to move the tides up and down. We can take advantage of the moving water to generate electric â¦ ity without using up any of the energy. The same energy will come back with the next tide.