Water Quality

Which is a point source of pollution?

• Farm runoff

• A sewage treatment plant

• Storm runoff

• A suburban community

• A harbor

Eutrophication

• is the result of excess carbon

• causes low BOD

• can cause dead zones

• is rarely caused by human activities

• only occurs in fresh water

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

Fecal coliform bacteria

• is used as an indicator of water quality

• is the cause of many waterborne diseases

• is another name for Cryptosporidium

• usually causes diarrhea

• is rarely found in septage

Leach fields are

• used to remove sludge

• part of tertiary water treatment

• used to filter septage

• a result of sewage dumping

• often used with manure lagoons

Arsenic is

• found naturally in groundwater

• often discovered due to its rapid health effects

• inexpensive to remove from drinking water

• found in rainwater

• primarily found in water in North America

Tags

NGSS.MS-ESS3-1

Which is NOT true of acid deposition?

• It is primarily due to the burning of coal

• It is treated using limestone

• It can occur as a result of mining

• It is lethal to many aquatic organisms

• It causes increased solubility of many ions

Tags

NGSS.MS-LS2-4

Mercury

• is harmless once converted into methylmercury

• exposure often occurs through shellfish

• is most concentrated in herbivores

• can be safely trapped during the production of concrete

• damages the immune system

Tags

NGSS.MS-LS1-5

Which hazardous material is known to cause cancer?

• Lead

• DDT

• Mercury

• Perchlorates

• PCBs

Approximately what percent of the oil in marine waters worldwide is due to natural causes?

• 5 percent

• 20 percent

• 35 percent

• 45 percent

• 60 percent

Which is NOT used in the cleanup of oil spills?

• Genetically engineered bacteria

• Clumping agents applied to underwater plumes

• Chemical dispersants

• Large vacuums

• Absorbent materials along the coast

Tags

NGSS.MS-ESS3-3