What system provides evidence to support the idea of bottom-up control?
A) The control of cottony cushion scale by Vedalia beetles
B) The increase of tree growth following habitat colonization by wolves
C) Fertilizer increasing water hyacinth nutrient levels and beetle abundance
D) Overfishing in the cod industry
E) The increase in skates and rays following shark removal
Correct Answer:
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Q1: Which of the following exert bottom-up control?
A)
Q2: A trophic cascade implies the presence of
A)
Q4: The idea that predators control herbivore numbers,
Q5: Cod feed on small fish and crabs,
Q6: Charles Krebs and colleagues applied three different
Q7: In the Serengeti grasslands, star grass density
Q8: According to the ecosystem exploitation hypothesis, in
Q9: The environmental stress hypothesis suggests predation causes
Q10: Key factors are often
A) Density dependent
B) Density
Q11: If logNt=2.0 and logNt+1=1.8 then the killing
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