Question 1

Periodic increases and decreases in red kangaroo populations in Australia are associated with

Accepted Answer

A)   predator-driven population cycles.
B)   parasite population cycles.
C)   sunspot cycles.
D)   the El Niño - Southern Oscillation.
E)   None of the choices are correct.F) B) and E)
G) All of the above

Question 2

The reduction in atmospheric 14C/12C ratio associated with fossil fuel combustion is known as the ____________.

Accepted Answer

Question 3

During El Niño events, coastal populations of anchovies and sardines

Accepted Answer

A)   flourish as seabird populations decline.
B)   decline as sea lion populations flourish.
C)   flourish as sea lion populations decline.
D)   decline as phytoplankton populations decline.
E)   flourish as phytoplankton populations flourish.F) None of the above
G) B) and E)

Question 4

Before life evolved on Earth, the atmosphere

Accepted Answer

A)   had much higher concentrations of oxygen.
B)   had much lower concentrations of carbon dioxide.
C)   was more or less the same as it is now.
D)   had much lower concentrations of oxygen.
E)   had much lower concentrations of hydrogen.F) B) and C)
G) C) and D)

Question 5

During the past century, the average global temperature has risen

Accepted Answer

A)   0.7C
B)   1.5C
C)   3.5C
D)   5.5C
E)   10.5CF) A) and C)
G) B) and E)

Question 6

The 1987 Montreal Protocol was an agreement to limit human production of

Accepted Answer

A)   carbon dioxide.
B)   nitrate.
C)   PCBs.
D)   lead paint.
E)   chlorofluorocarbons.F) All of the above
G) A) and B)

Question 7

During El Niño events,

Accepted Answer

A)   Australia experiences drought.
B)   western North America experiences drought.
C)   Canada and Alaska are cooler than average.
D)   populations of anchovies and seabirds increase along the South American coast.
E)   primary production increases around the Galápagos Islands.F) None of the above
G) A) and E)

Question 8

The nation containing the largest fraction of the world's tropical rain forest is

Accepted Answer

A)   Congo.
B)   Brazil.
C)   Mexico.
D)   The United States.
E)   Indonesia.F) A) and E)
G) A) and D)

Question 9

A carbon dioxide concentration record from the Vostok ice core indicates

Accepted Answer

A)   little change in atmospheric CO2 concentration before the Industrial Revolution.
B)   dramatic increases in atmospheric CO2 associated with ice ages.
C)   dramatic increases in atmospheric CO2 associated with interglacials.
D)   dramatic changes in atmospheric CO2, but no obvious association with the glacial/interglacial cycle.
E)   an inverse correlation between atmospheric CO2 concentration and temperature.F) A) and D)
G) A) and E)

Exam 23: Global Ecology

During the past century, the average global temperature has risen

Correct Answer
verified

During El Niño events,

Correct Answer
verified

The 1987 Montreal Protocol was an agreement to limit human production of

Correct Answer
verified

The nation containing the largest fraction of the world's tropical rain forest is

Correct Answer
verified

The reduction in atmospheric ¹⁴C/¹²C ratio associated with fossil fuel combustion is known as the ____________.

Correct Answer
verified

A carbon dioxide concentration record from the Vostok ice core indicates

Correct Answer
verified

Periodic increases and decreases in red kangaroo populations in Australia are associated with

Correct Answer
verified

Before life evolved on Earth, the atmosphere

Correct Answer
verified

During El Niño events, coastal populations of anchovies and sardines

Correct Answer
verified

Exam 23: Global Ecology

During the past century, the average global temperature has risen

Correct AnswerverifiedShow Answer

During El Niño events,

Correct AnswerverifiedShow Answer

The 1987 Montreal Protocol was an agreement to limit human production of

Correct AnswerverifiedShow Answer

The nation containing the largest fraction of the world's tropical rain forest is

Correct AnswerverifiedShow Answer

The reduction in atmospheric 14C/12C ratio associated with fossil fuel combustion is known as the ____________.

Correct AnswerverifiedShow Answer

A carbon dioxide concentration record from the Vostok ice core indicates

Correct AnswerverifiedShow Answer

Periodic increases and decreases in red kangaroo populations in Australia are associated with

Correct AnswerverifiedShow Answer

Before life evolved on Earth, the atmosphere

Correct AnswerverifiedShow Answer

During El Niño events, coastal populations of anchovies and sardines

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The reduction in atmospheric ¹⁴C/¹²C ratio associated with fossil fuel combustion is known as the ____________.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified