When the land bridge formed between North and South America,
A) character displacement occurred.
B) marsupials invaded North America.
C) placental mammals invaded North America.
D) placental carnivores drove some marsupials extinct.
E) none of the above
Correct Answer:
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Q12: The Lotka-Volterra models show that coexistence is
Q13: The realized niche
A) is an adaptive response
Q14: Self-thinning
A) occurs when different tree species compete.
B)
Q15: In a deWitt replacement series, the most
Q16: The songs of black-capped and mountain chickadees
A)
Q18: Competition occurs only between related taxa.
Q19: Semibalanus and Chthamalus compete for light resources.
Q20: Disturbance can reduce the intensity of competition.
Q21: Competitive exclusion occurs if niche overlap is
Q22: The fundamental niche is the role of
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