What is pH. pH is a measure of the hydorgen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH. This may seem like a confusion way to express these reationships, and it is, until you understand what pH stands for.
Because they depend on sunlight for photosynthesis, diatoms generally live in the upper 200 meters of oceans and bodies of fresh water. Some species of diatoms simply float in the water currents near the surface.Others attach themselves to larger floating objects or to the sea floor.ecause they depend on sunlight for photosynthesis, diatoms generally live in the upper 200 meters of oceans and bodies of fresh water. Some species of diatoms simply float in the water currents near the surface.
Answers. Because there is so much salt in it, Dead Sea water is very dense compared with fresh water or ordinary sea water. And because less objects or surface floats in water. An example of it is a needle, tissue and a tap water.When you put the needle in the water it will sink because it is denser than the water, but when you use the tissue to let the needle float the density of the needle lesses, and it is called surface tension.hen you put the needle in the water it will sink because it is denser than the water, but when you use the tissue to let the needle float the density of the needle lesses, and it is called surface tension.