Gibbs himself considered the following problem that arises if the ideal gas entropy is not extensive. Two identical containers of an ideal gas sit side-by-side. There is a certain amount of entropy S associated with each container of gas, and this depends on the volume of each container.
The intertidal zone is the area of the ocean between the high tide and low tide lines, usually on the beach at the water's edge. If you think of the line created at high tide as the upper limit and the line created at low tide as the lower limit, the intertidal zone is everything between those lines.
Subtidal Zone â The intertidal zone is the area below the low tide water line. This area is always covered by water. This area can include many different types of habitats, including soft and hard bottom, submerged aquatic vegetation beds and coral reefs.ast Updated on: 06-24-2008. Estuaries can also be divided into tidal zones (supratidal, intertidal and subtidal zone) subject to changing water levels, temperature, oxygen content and levels of light.