Bunda Cliffs is an aboriginal name used for the Nullarbor coastal cliffs. The sea cliffs, which are some 60 (200 ft) to 120 meters (400 ft) high, extend for around 100 km along the Great Australian Bight near its northern extremity and are close to the Nullarbor Plain in a very sparsely settled area of Australia.
H+ means the charge of the hydrogen ion. i.e when a hydrogen ion is formed, more oftan than not, an electron is lost from hydrogens outer sheel giving the ion a charge of +1. H+ ions are also basicaly the thing that makes an acid. e.g Hydrochloric acid (HCl) when in solution seperates into Cl- ions and H+ ions.
As seen on the pH scale, bases describe solutions with a pH greater than seven , and there is a range of how basic a solution can be. A base is the opposite of an acid. The 'H' in 'pH' stands for hydrogen. The origins of the 'p' in 'pH' is somewhat debatable, but we can think of pH as the power of hydrogen or the potential of hydrogen. pH is defined as -log(H+), or the -log of the activity of hydrogen.