### physical process | biological process:

Eutrophication
* can be natural or human-induced
  - cause serious effects to living resources or their habitats
* can produce many undesirable effects in coastal systems
  - problems such as bad tastes and odours as well as green scum algae
* causes algal blooms, fish kills, and other water quality problems
  - the disappearance of the waterward side of populations
* changes the species composition, usually also causing a reduction in species numbers.
* comes from a Greek word meaning nutrients.
* common phenomenon in coastal waters.
* describes the biological effects of an increase in the concentration of nutrients.
* form of pollution.
* impacts on ecosystem services.
* is an increase in nutrients that can lead to an overgrowth of algae
  - another major problem facing Louisiana s wetlands
  - currently one of the most serious pollution problems in America
  - more likely where nutrients come from several sources
  - one process used to treat polluted water for human consumption
  - still one of the major environmental problems in coastal areas of Europe
* is the build-up of nutrients in an aquatic environment
  - enrichment of plant nutrients such as phosphate and nitrate in a water body
  - excess of nutrients in a body of water
  - excessive growth of aquatic plants and algae
* is the natural aging of lakes or streams brought on by nutrient enrichment
  - process of lakes
  - process by which the nutrient content in water is increased suddenly
* is the process of a body of water becoming nutrient rich
  - becoming better nourished either naturally or artificially
  - lake aging
  - response of a body of water to enrichment by nutrients
* is when fertilizers spill into creeks which increases plant growth
  - plant and algal growth is over stimulated in a water ecosystem
  - there is an aundance of nutrients
* leads to a decline in the number of life forms in a water body
  - changes in the availability of light and certain nutrients to an ecosystem
* major problem as nutrients cause algal blooms periodically in the lake
  - that is associated with algal blooms in lakes
  - threat for freshwater ecosystems
* means enrichment.
* natural part of aquatic succession
  - process in all bodies of water as decaying matter accumulates
* natural process that typically occurs as lakes age
  - usually takes place over thousands of years
* occurs naturally in many bodies of water, but can be accelerated by pollution.
* occurs when excessive nutrients are present as a result of sewage discharge
  - nutrient input to surface water causes increased algae production
* refers to the effects of nutrients on aquatic ecosystems.
* results from combinations of increased nutrient and sediment discharges with runoff.
* serious problem for fisheries, recreation, industry and water supply.

### physical process | biological process | eutrophication:

Cultural eutrophication
* can result in algal blooms.
* describes human-generated fertilization of water bodies.
* form of water pollution.
* is nutrient-enrichment of an ecosystem by human influences.
* is the Earth's most widespread water quality problem
  - accelerated aging of a lake as a result of human activities
* leads to an exhaustion of oxygen supply in the water.

Fat metabolism
* is one of the cornerstones of superior health.
* produces ketoacids, which causes acidosis.

Feminization
* biological process
* by - product of the control process.
* occurs in males only.