AP Environmental Scienceeasymcq1 pt
Which sequence shows primary succession?
A.Bare rock → lichens → mosses → soil → grasses → shrubs → trees
B.Forest fire → grasses → trees
C.Trees → shrubs → grasses → rock
D.Farm → forest → lake
Explanation
Core Concept
Pioneer lichens weather rock into thin soil; each stage conditions the site for the next — the classic primary progression.
Correct Answer
ABare rock → lichens → mosses → soil → grasses → shrubs → trees
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