Ecology Test Review Water Pollution

1

• Ecology Test Review Water Pollution
• two main elements involved with enrichment of
  water
• bacterium being tested for in fecal coliform test
• any disease causing agent
• step in water treatment that removes large debris
  from waste via filtering (screens)
• the amount of oxygen needed by microorganisms to
  decompose the wastes into carbon dioxide, water,
  and minerals
• area in Gulf of Mexico without any life growing
  due to low dissolved oxygen levels
• how does thermal pollution affect dissolved
  oxygen
• material removed from waste water treatment

2

• enrichment of a lake or pond by inorganic plant
  and algal nutrients such as phosphorus and
  nitrogen
• artificial lakes produced for the use of
  purification or as extra storage during a season
  of drought
• increase in concentration of a pollutant as it
  moves up in the food chain
• step in waste water treatment that uses
  microorganisms to decompose the suspended organic
  material in wastewater
• what chemical is sometimes added to water and has
  helped greatly with tooth decay
• if you pour old oil in the rocks in your
  backyard, this oil will eventually reach the
  water supply. this is an example of what type of
  source pollution

3

• relate large amount of sewage in water, BOD, and
  dissolved oxygen
• three ways to decrease water pollution
• hot water dumped directly into river from a power
  plant would be what type of source pollution
• what is added to kill microorganisms in drinking
  water
• give an example of a toxic heavy metal that can
  pollute water
• what step of water treatment removes heavy metals

4

• Last slide
• unenriched, minimal level of nutrients, clear
  water, small population of aquatic animals
• carbon containing compounds
• hypoxia
• massive growth of photosynthetic algae
• what negative impacts result after an algal bloom
• where is most freshwater
• how much freshwater available
• tie breaker
• name bacterium responsible for Milwaukee outbreak
• Cryptosporidim