pH is a logarithmic measure of the hydrogen ion concentration of an aqueous solution: pH = -log[H+] where log is the base 10 logarithm and [H+] is the hydrogen ion concentration in moles per liter. pH describes how acidic or basic an aqueous solution is, where a pH below 7 is acidic and a pH greater than 7 is basic. pH of 7 is considered neutral (e.g., pure water). Typically, values of pH range from 0 to 14, although very strong acids may have a negative pH, while very strong bases may have a pH exceeding 14. The term pH was first described by Danish biochemist SÃ¸ren Peter Lauritz SÃ¸rensen in 1909. pH is an abbreviation for power of hydrogen where p is short for the German word for power, potenz and H is the element symbol for hydrogen. Why pH Measurements Are Important
The 3 types of symbiotic relationships are mutualism, commensalism, and parasitism. What makes these three relationships similar is that they involve the close and often long- â¦ term interaction between different biological species.
rating newest oldest best answer the symbiotic realtionship in lichens is that of a fungus and an algae or a fungus and a cyanobacteria a lichen is a symbiosisthat means that it is two or more organisms living together such that both are more successful within the partnership than they would have been if they were living on their own symbiotic relationship is one in which both organisms benefit take for example the symbiotic relationship between a whale and the manacles that live on the whale s skin while the whale filter feeds it faces difficulties of surrounding detritus that affects it s vision in the water