apes reading guide
Freshwater accounts for what percent of total water in the world?
2-3
100,000 barrels of crude oil from an oil drilling rig in the Pacific, 1969
santa barbara
Students studying a river found high levels of fecal coliform bacteria. They concluded that ...
untreated animal waste entered the river
El Nino
when the red is clumped together
Which of the following is a direct economic advantage associated with aquaculture?
Aquaculture produces large amounts of seafood for human purchase and consumption year-round.
Which of the following laws created the Superfund program?
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)
Which of the following is a disadvantage of fish farming?
It can lead to large die-offs due to disease.
salt intrusion into freshwater aquifers; beach erosion; and the disruption of costal fisheries are all possible results of which of the following?**
More PCBs and BPA in the water.
A certain chemical has a concentration of 10 ppm in water. Which statement most accurately discribes its concentration?
There are 10 molecules of the chemical in one million molecules of water.
Which of the following is NOT true about confined aquifers?***
They are polluted more easily than unconfined aquifers.
68 million gallons entered the English Channel in 1978
amoco cadiz
Worst oil spill in US History, 2010
bp deepwater horizon
Which of the following is the most successful solution to the problem of fish mortality caused by dams?
building fish ladders around the dam
The Coriolis Effect and prevailing winds contribute to the formation of gyres in the oceans. Which direction do the gyres flow in the Northern Hemisphere?
clockwise
a productive lake that has some organic matter, medium nutrient levels, decomposing matter is accumulating at the bottom of the lake
eutrophic
Oxygen-depleted zones of the oceans, such as the one at the mouth of the Mississippi River, are most likely caused by ...
excessive fertilizer use in the watershed, leading to eutrophication
20 million gallons spilled in Prince William Sound in Alaska
exxon valdez
The release of a large amount of sewage and other organic wastes into a river would likely result in a sharp
increase in the biological oxygen demand
Which of the following is not an environmental function of wetlands?
increasing runoff
China's Three Gorges Dam
is the world's largest hydroelectric plant
What health threat is associated with water from plumbing in older homes?
lead
The goal of the second stage of a waste water treatment plant is to ...
lower the amount of dissolved organic material in the water
Animal waste from Concentrated Animal Feeding Operations (CAFOs)
manure lagoon
has high levels of organic matter, murky water, thick layer of decomposing matter at the bottom, low levels of dissolved oxygen
mesotrophic
a deep lake with clear water, low productivity, high oxygen levels
oligotrophic
Largest oil spill in the world, 1991, deliberate act of war, 330 million gallons
persian gulf war
runoff / storm water from neighborhoods
retention pond
Which of the sources below would produce non-point source pollution?
runoff from a large area of farmland near a river
Many synthetic chemicals, such as PCBs, act as estrogen mimics. In an ecosystem, these persistant chemicals would most likely have the greatest effect on which of the following?
secondary consumers
Human waste in rural areas
septic tank
Household waste in urban areas
sewage
Which of the following choices gives the correct orrder of processing sanitary waste in a sewage treatment plant?
solid separation - breakdown of organics by bacteria - disinfection
The Thermohaline Circulation is also know as...
the Global Conveyor Belt
When freshwater is not readily available, desalinated water may be used. Where is this most likely to happen?
the middle east
Which of the following fishing techniques is most damaging to benthic ocean ecosystems?
trawling or dredging