Question
Which statement best describes the first step of primary succession?
O A. Lichens begin to grow and break down rock to form soil.
• B. Grasses and other long-lived plants begin to grow.
• C. Mosses begin to grow and fix nitrogen into the soil.
D. Shade-intolerant, fast-growing trees begin to grow, and their leaves
fertilize the soil.
Answer
A. Lichens begin to grow and break down rock to form soil.