Multiple Choice
Which is an example of secondary succession?
A) Beach grasses colonize a newly formed sand dune.
B) Retreating glaciers leave alluvial soils for cottonwood trees to colonize.
C) A shift in river flow introduces sediment to a rocky area.
D) A farmer allows an agricultural field to return to native grassland.
Correct Answer:

Verified
Correct Answer:
Verified
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