Question

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Which statement best describes the role of lichens in ecological succession?

A. They replace smaller trees and shrubs that need less sunlight.

B. They add nutrients to the soil and hold the soil together with roots.

C. They release acids that help break down bare rock to form soil.

D. They use nitrogen from the air to make nutrients that plants can use.

Answer 1

D. Lichens live on other plants and provide nutrients for them, it’s a type of symbiotic relationship.

Answer 2

C. They release acids that help break down bare rock to form soil.

Step-by-step explanation:

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