Multiple Choice Quiz


1	El Nino is now more accurately called:
		A)	a monsoon
		B)	a Walker Maximum
		C)	a Southern Oscillation
		D)	the East Pacific Rise


2	Effects of El Nino include:
		A)	decreases in Great Salt Lake brine shrimp populations
		B)	declines in red kangaroo populations
		C)	declines in anchovy catches in South America
		D)	all of the above


3	An estimate for human transformation of the ice-free surface of the earth is:
		A)	one-third
		B)	half
		C)	two-thirds
		D)	three-quarters


4	Vostok ice cores show a fair correlation between:
		A)	biodiversity and temperature
		B)	temperature and carbon dioxide levels
		C)	carbon dioxide and radon
		D)	radon and carbon monoxide


5	A “Keeling curve” indicates:
		A)	how earth’s tilt affects interception of solar output
		B)	the path of barometric pressure declines across the equator
		C)	additions of sequested carbon to the atmosphere
		D)	temperature increases observed from buoys at sea


6	An LTER is:
		A)	a laser altimeter
		B)	any isotope of oxygen that weighs less than O-18
		C)	a field site
		D)	a multidisciplinary tool for spatial data analysis


7	Molles ends Chapter 23 by making a plea for:
		A)	globally-significant research
		B)	statistical accuracy during mark-recapture experiments
		C)	ecologists becoming policy advocates
		D)	saving the panda as a mascot for biodiversity


8	An estimate for the global loss of tropical forests is:
		A)	3,000 sq. km/yr
		B)	30,000 sq. km/yr
		C)	300,000 sq. km/yr
		D)	3 million sq. km/yr


9	True or False: Humans have increased the quantity of fixed nitrogen in the biosphere.
		A)	True
		B)	False


10	True or False: Human-caused changes in land use are decreasing earth’s biodiversity.
		A)	True
		B)	False

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