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Match each interspecific ecological interaction with its species outcome (+/-):

A1-A, 2-B, 3-C
B1-B, 2-A, 3-C
C1-C, 2-B, 3-A
D1-A, 2-C, 3-B
Answer & Solution
Correct answer: A. 1-A, 2-B, 3-C
Mutualism is +/+, commensalism is +/0, amensalism is -/0 (e.g., Penicillium inhibiting bacteria).
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