EVR 1001 EXAM 4 QUESTIONS AND ANSWERS
The pair of mallard ducks in the figure eats floating plants such as duckweed, seeds of
shoreline plants, and very small organisms at or near the surface. They would be most
affected by any change to the ________. - Answers :littoral or limnetic zones
Rooted freshwater plants cannot live below ________. - Answers :the limnetic zone
Only about 2.5% of all the water on our planet is freshwater, however, ________. -
Answers :most of this is in polar ice caps, glaciers, and underground aquifers and is not
easily accessed for human use
Of the following, ________ characterize(s) an oligotrophic lake or pond. - Answers :Both
C and D
The region of a lake where plants are able to attach to the bottom and still reach above
the surface is known as the __________. - Answers :littoral zone
Water bodies where rivers flow into the oceans, mixing fresh water with saltwater, are
called ________. - Answers :estuaries
Oceans have absorbed approximately one-third of the excess carbon dioxide that
humans have added to Earth's atmosphere so far. This has slowed the progression of
global climate change, but it has led to ________. - Answers :a decrease in the pH
(ocean acidification)
The area that underlies the shallow water bordering continents is called the ________. -
Answers :continental shelf
Zooxanthellae are ________. - Answers :symbiotic algae that provide energy to many
species of corals
The exceptionally strong warming of the eastern Pacific is referred to as ________. -
Answers :El Niño
Upwelling ________. - Answers :brings benthic nutrients to the ocean surface
promoting high primary productivity
Salt marshes are ________ ecosystems, while mangroves are ________. - Answers
:temperate intertidal; found on subtropical and tropical shorelines
The rapid melting of Greenland's ice cap could disrupt the NADW formation by
________. - Answers :adding huge amounts of less dense fresh water to the surface of
the system
, In thermohaline circulation of global current systems, surface water is ________. -
Answers :less salty, less dense, and warmer
A 2003 study reported that ________% of large-bodied fish and sharks were lost in the
first decade of industrialized fishing. - Answers :90
Which of the following statements about ocean water is true? - Answers :Oceans have a
high heat capacity and change temperature slowly.
What percentage of Earth's surface is ocean? - Answers :71%
Freshwater wetlands provide important ecosystem services, including ________. -
Answers :all of the above
Of the following, ________ best describes floodplains. - Answers :a region of land that
is periodically flooded when a river overflows
The initial consequence of falling water tables would be the loss of ________. -
Answers :not trees that do best with low precipitation
What percentage of Earth's water is fresh and available for drinking? - Answers :2.5%
What is an area of land in which all freshwater converges into the largest stream,
ultimately draining into the largest body of water? - Answers :watershed
In which of the following units is pore space partially saturated with water? - Answers
:zone of aeration
Which of the following is a systematic shift in atmospheric pressure, sea surface
temperature, and ocean circulation patterns in the tropical Pacific Ocean that alters
weather patterns on a worldwide scale? - Answers :El Niño-Southern Oscillation
(ENSO)
Humans allocate approximately 70% of their annual freshwater use for ________. -
Answers :agricultural irrigation and providing water for livestock
We build dams to ________. - Answers :generate electricity, prevent flooding, and
provide irrigation and drinking water
Dam removal in this country ________. - Answers :will probably continue because the
environmental impacts of dams are reviewed periodically
Overpumping groundwater in coastal areas can cause ________ to move into aquifers,
making the water undrinkable. - Answers :saltwater
The pair of mallard ducks in the figure eats floating plants such as duckweed, seeds of
shoreline plants, and very small organisms at or near the surface. They would be most
affected by any change to the ________. - Answers :littoral or limnetic zones
Rooted freshwater plants cannot live below ________. - Answers :the limnetic zone
Only about 2.5% of all the water on our planet is freshwater, however, ________. -
Answers :most of this is in polar ice caps, glaciers, and underground aquifers and is not
easily accessed for human use
Of the following, ________ characterize(s) an oligotrophic lake or pond. - Answers :Both
C and D
The region of a lake where plants are able to attach to the bottom and still reach above
the surface is known as the __________. - Answers :littoral zone
Water bodies where rivers flow into the oceans, mixing fresh water with saltwater, are
called ________. - Answers :estuaries
Oceans have absorbed approximately one-third of the excess carbon dioxide that
humans have added to Earth's atmosphere so far. This has slowed the progression of
global climate change, but it has led to ________. - Answers :a decrease in the pH
(ocean acidification)
The area that underlies the shallow water bordering continents is called the ________. -
Answers :continental shelf
Zooxanthellae are ________. - Answers :symbiotic algae that provide energy to many
species of corals
The exceptionally strong warming of the eastern Pacific is referred to as ________. -
Answers :El Niño
Upwelling ________. - Answers :brings benthic nutrients to the ocean surface
promoting high primary productivity
Salt marshes are ________ ecosystems, while mangroves are ________. - Answers
:temperate intertidal; found on subtropical and tropical shorelines
The rapid melting of Greenland's ice cap could disrupt the NADW formation by
________. - Answers :adding huge amounts of less dense fresh water to the surface of
the system
, In thermohaline circulation of global current systems, surface water is ________. -
Answers :less salty, less dense, and warmer
A 2003 study reported that ________% of large-bodied fish and sharks were lost in the
first decade of industrialized fishing. - Answers :90
Which of the following statements about ocean water is true? - Answers :Oceans have a
high heat capacity and change temperature slowly.
What percentage of Earth's surface is ocean? - Answers :71%
Freshwater wetlands provide important ecosystem services, including ________. -
Answers :all of the above
Of the following, ________ best describes floodplains. - Answers :a region of land that
is periodically flooded when a river overflows
The initial consequence of falling water tables would be the loss of ________. -
Answers :not trees that do best with low precipitation
What percentage of Earth's water is fresh and available for drinking? - Answers :2.5%
What is an area of land in which all freshwater converges into the largest stream,
ultimately draining into the largest body of water? - Answers :watershed
In which of the following units is pore space partially saturated with water? - Answers
:zone of aeration
Which of the following is a systematic shift in atmospheric pressure, sea surface
temperature, and ocean circulation patterns in the tropical Pacific Ocean that alters
weather patterns on a worldwide scale? - Answers :El Niño-Southern Oscillation
(ENSO)
Humans allocate approximately 70% of their annual freshwater use for ________. -
Answers :agricultural irrigation and providing water for livestock
We build dams to ________. - Answers :generate electricity, prevent flooding, and
provide irrigation and drinking water
Dam removal in this country ________. - Answers :will probably continue because the
environmental impacts of dams are reviewed periodically
Overpumping groundwater in coastal areas can cause ________ to move into aquifers,
making the water undrinkable. - Answers :saltwater
