Ocean cold as water at greater depths. Below the thermocline, water is very cold, ranging from −1 °C to 3 °C. Because this deep and cold layer contains the bulk of ocean water, the average temperature of the world ocean is 3.9 °C. If a zone undergoes dramatic changes in salinity with depth, it contains a halocline. If a zone undergoes a strong, vertical chemistry gradient with depth, it contains a chemocline. The halocline often coincides with the thermocline, and the combination produces a pronounced pycnocline. The deepest point in the ocean is the Mariana Trench, located in the Pacific Ocean
The What in the World? Quiz The What in the World? Quiz The What in the World? Quiz is a British comedy panel game first broadcast on 5 September 2008 on Five. The show is hosted by Marcus Brigstocke and guest stars Lee Hurst and Dominic Holland as the team captains. The show asks questions themed on science and technology. The guests on the show are scientists and academic experts. After the first three episodes, the rest of the series was indefinitely postponed. "The What in the World? Quiz" is split into four different rounds. 1) World of Extremes: The panel are given three different things