Question

question 10 of 10 which statement best describes the first step of primary succession? a. grasses and other long - lived plants begin to grow. b. shade - intolerant, fast - growing trees begin to grow, and their leaves fertilize the soil. c. lichens begin to grow and break down rock to form soil. d. mosses begin to grow and fix nitrogen into the soil.

Explanation:

Primary succession starts on bare rock. Lichens are pioneer species that can grow on rock, secreting acids to break it down and initiate soil - formation. Other options occur later in succession.

Answer:

C. Lichens begin to grow and break down rock to form soil.