EST Chapter 11: Understanding Core Technologies
Which sewage treatment stage allows solids to settle out? - correct answer ✔✔primary
What is used to assess how pollutants affect organisms? - correct answer ✔✔environmental bioassay
Why is the use of DDT so hazardous? - correct answer ✔✔It reduces bird populations.
Where does the majority of plastic in the ocean go? - correct answer ✔✔It remains at the surface.
What type of oil spill was the Deepwater Horizon in the Gulf of Mexico? - correct answer ✔✔extraction
DDT has been banned in the United States since 1972, but other countries continue to use it. Why? -
correct answer ✔✔because it decreases public health risks
Storm drain runoff, and any trash that flows with it, is called what? - correct answer ✔✔non-point
source pollution
The increase of toxic chemicals with increasing levels in the food web is referred to as what? - correct
answer ✔✔biomagnification
What toxic compound found in petroleum is harmful to marine life? - correct answer ✔✔PAH
It is illegal to dump___ anywhere in the ocean? - correct answer ✔✔Plastic
The location of the Exxon Valdez oil spill has been monitored since the spill occurred. Some areas were
intensively cleaned, and others were not. What difference has been seen between these two areas in the
last 25+ years? - correct answer ✔✔Untreated areas have recovered better than those that were
cleaned.
, What is the worst issue associated with plastics in the ocean? - correct answer ✔✔accumulation of toxic
chemicals that are then ingested
Which of the following is considered to be marine pollution? - correct answer ✔✔sonar from boats
What is the preproduction form of plastic? - correct answer ✔✔nurdles
What is DDT? - correct answer ✔✔pesticide
How far from a coastline does a country still have legal control based upon territorial law? - correct
answer ✔✔3 miles
What makes non-native species so damaging in an area? - correct answer ✔✔They outcompete native
species.
What is bioremediation? - correct answer ✔✔the use of bacteria and fungi to break down oil from a spill
What is the greatest source of oil to the ocean? - correct answer ✔✔natural seeps
What is the threshold mortality rate (the number of test organisms that die as a result of exposure to a
potential pollutant) that determines if a pollutant is toxic or not? - correct answer ✔✔50%
What causes Minamata disease? - correct answer ✔✔Mercury
What is sewage sludge? - correct answer ✔✔semisolid material remaining after all sewage treatment
Which of the following is the worlds largest oil spill? - correct answer ✔✔Kuwait 1991
Which of the following is the only country that has not adopted the law of the sea treaty? - correct
answer ✔✔United States
Which sewage treatment stage allows solids to settle out? - correct answer ✔✔primary
What is used to assess how pollutants affect organisms? - correct answer ✔✔environmental bioassay
Why is the use of DDT so hazardous? - correct answer ✔✔It reduces bird populations.
Where does the majority of plastic in the ocean go? - correct answer ✔✔It remains at the surface.
What type of oil spill was the Deepwater Horizon in the Gulf of Mexico? - correct answer ✔✔extraction
DDT has been banned in the United States since 1972, but other countries continue to use it. Why? -
correct answer ✔✔because it decreases public health risks
Storm drain runoff, and any trash that flows with it, is called what? - correct answer ✔✔non-point
source pollution
The increase of toxic chemicals with increasing levels in the food web is referred to as what? - correct
answer ✔✔biomagnification
What toxic compound found in petroleum is harmful to marine life? - correct answer ✔✔PAH
It is illegal to dump___ anywhere in the ocean? - correct answer ✔✔Plastic
The location of the Exxon Valdez oil spill has been monitored since the spill occurred. Some areas were
intensively cleaned, and others were not. What difference has been seen between these two areas in the
last 25+ years? - correct answer ✔✔Untreated areas have recovered better than those that were
cleaned.
, What is the worst issue associated with plastics in the ocean? - correct answer ✔✔accumulation of toxic
chemicals that are then ingested
Which of the following is considered to be marine pollution? - correct answer ✔✔sonar from boats
What is the preproduction form of plastic? - correct answer ✔✔nurdles
What is DDT? - correct answer ✔✔pesticide
How far from a coastline does a country still have legal control based upon territorial law? - correct
answer ✔✔3 miles
What makes non-native species so damaging in an area? - correct answer ✔✔They outcompete native
species.
What is bioremediation? - correct answer ✔✔the use of bacteria and fungi to break down oil from a spill
What is the greatest source of oil to the ocean? - correct answer ✔✔natural seeps
What is the threshold mortality rate (the number of test organisms that die as a result of exposure to a
potential pollutant) that determines if a pollutant is toxic or not? - correct answer ✔✔50%
What causes Minamata disease? - correct answer ✔✔Mercury
What is sewage sludge? - correct answer ✔✔semisolid material remaining after all sewage treatment
Which of the following is the worlds largest oil spill? - correct answer ✔✔Kuwait 1991
Which of the following is the only country that has not adopted the law of the sea treaty? - correct
answer ✔✔United States
