AP Biologyeasymcq1 pt
Ecological succession is best defined as
A.gradual change in community structure over time
B.a single catastrophic disturbance
C.the extinction of all species
D.an instant change with no history
Explanation
Core Concept
Ecological succession describes changes in community composition through time following formation or disturbance of habitat. The trajectory can depend on disturbance history, dispersal, species interactions, climate, and chance, so modern ecology does not require every community to pass through one deterministic sequence ending in a single stable 'climax' state. Succession is not named as required content in the current Fall 2025 AP Biology CED, so retain it as enrichment.
Correct Answer
Agradual change in community structure over time
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