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.
Not all marine organisms do live near the surface of the ocean, but those marine organisms that are producers (those that photosynthesise) do and they do so because to photosy â¦ nthesise they need to live in the surface layers where sunlight can penetrate because at depth the oceans are dark.ater is the most important part in an living organism. our body is made up of 70% water and it helps the blood flow regular to our body parts. Every cell in the human body â¦ needs water because many of the body's processes, including chemical reactions, take place in water.