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Question 43(Multiple Choice Worth 3 points)
(03.01 MC)
A scientist wishes to determine whether or not a marine ecosystem underwent primary or secondary succession in the past. What evidem
for making this determination?
O Geological and fossil evidence of producers that can live on rock.
Use radiocarbon dating to determine the age of the rock underlying the ecosystem.
Determine the age of the youngest organisms in the ecosystem at the present time.
Determine the chemical composition of the water in the ecosystem at the present time.
Question 44(Multiple Choice Worth 3 points)
(03.01 LC)

Ecological succession refers to the process of change in the species structure of an ecological community over time. Primary succession occurs in environments where no soil initially exists, like on bare rock, while secondary succession occurs in areas where there is soil present after a disturbance.

The main difference between primary and secondary succession is that primary succession starts in a virtually lifeless area, whereas secondary succession begins in areas where an existing community has been disrupted.

Two examples of habitats that undergo primary succession are lava fields and retreating glaciers, where pioneer species like lichens and mosses colonize the barren landscape.

Learn more about Ecological Succession in Marine Ecosystems here:

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