A group of related bird species has been studied, and has been observed to segregate by size so that larger species generally eat larger food items. This can be explained as an example of
A. competitive exclusion
B. amensalism.
C. interference competition.
D. resource partitioning.
E. competitive exclusion and interference competition.
D. resource partitioning.
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What key words does the question contain and what do they mean?
What will be an ideal response?
Limiting factors
a. produce more pronounced effects as a population grows. b. prevent indefinite, exponential population growth. c. can be either density-dependent or densityindependent. d. acting together constitute environmental resistance to population growth. e. include all of these.
Which of the following can cause cancer?
A. chemicals B. viruses C. environmental contaminants D. UV rays E. All of the choices can cause cancer.
Determine whether the following statement is true or false: Adenosine triphosphate (ATP) is a crucially important energy carrier in cells.
a. true b. false