When lava first breaks through the surface of the Earth, it is an extremely hot liquid. On average, fresh lava can be between 1,300Â° F and 2,200Â° F! Depending on its exact temperature, fresh lava usually glows either orange/red (cooler) or white (hotter). Eventually, lava cools and returns to solid rock again.
Eutrophication is the process of increase of plant nutrients in water with the consequent. increase in the growth of algae and higher plants. This process is facilitated by external. and internal (such as nitrogen fixation) sources of nutrients. Input of nutrients may be. from point or diffuse sources.
Sometimes it is caused by a kind of blue green algae called cyanophyceae. It causes a phenomenon called water bloom. It makes the water dark green in color. Causes are an unusual amount of sunshine, or deposits of phosphorus or nitrogen in the water derived from human activity. large deposition of algae on the surfacxe of water resulting into non availability of oxygen to the marine life resulting in their death causes eutrophication...........