In these organisms, genetic material is organized into chromosomes that reside in the nucleus. Eutrophication Physical, chemical, and biological changes in a water body as a result of the input nitrogen and phosphorus. Eutrophic Lake Lake that has an excessive supply of nutrients , mostly in the form of nitrates and phosphates. Also see mesotrophic lake and oligotrophic lake . Evaporation Evaporation can be defined as the process by which liquid water is converted into a gaseous state.
Evaporation can only occur when water is available.
The evaporation process requires large amounts of energy. For example, the evaporation of one gram of water requires 600 calories of heat energy . Evapotranspiration Combined loss of water to the atmosphere via the processes of evaporation and transpiration . Evergreen Vegetation Vegetation that keeps a majority of their leaves or needles throughout the year. Also see deciduous vegetation and succulent vegetation .