Multiple Choice
The number of trophic levels in an ecosystem is limited by
A) the number of tertiary consumers.
B) the loss of energy with each transfer between trophic levels.
C) the gain of energy with each transfer between trophic levels.
D) the rate at which organisms can recycle energy within the ecosystem.
E) the rate at which secondary consumers consume their prey.
Correct Answer:
Verified
Correct Answer:
Verified
Q2: The total amount of energy fixed by
Q3: Carnivores that feed on herbivores (or on
Q4: Among lakes, primary productivity seems to be
Q5: The low productivity of arctic tundra ecosystems
Q6: The "trophic cascade hypothesis" emphasizes the role
Q7: Nitrogen stable isotopes are useful tools for
Q8: Actual evapotranspiration rates are highest in _
Q9: In Stephen Carpenter and colleagues' manipulations of
Q10: Experimental fertilizations in the Baltic Sea suggest
Q11: The terrestrial ecosystems with highest primary production