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Problem 7 - Olympiad
Which statement correctly describes the role of lichens in ecological succession?
A. A) Facilitate decomposition of organic matter in climax stages
B. B) Are primary producers in secondary succession
C. C) Contribute to soil formation in pioneer communities
D. D) Act as predators in nutrient-poor ecosystems
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Correct: C
Lichens are pioneer species in primary succession, secreting acids that break down rocks to form soil.