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.
There are two major causes for eutrophication in aquatic systems that are excess of nitrogen and phosphate in water. Generally these two nutrients added in aquatic system by human activities.utrophication can be of two types.Man madeWhen the waste materials like sewage effluents are thrown in the water than it contains some nutrients which causes this problem.