AP BIOLOGY

ECOLOGY

ECOLOGICAL SUCCESSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What would most likely occur after an ecosystem is disrupted by fire? (TEK 7.10C)
A
The ecosystem would eventually return to its original state.
B
The ecosystem would return to its previous state immediately.
C
The ecosystem would evolve into a new ecosystem that is totally different from the original.
D
The ecosystem would become an ever-changing environment with no stability.
Explanation: 

Detailed explanation-1: -The impact of ecosystem destruction are the following: Increased flooding due to the erosion of soil and lack of trees. Rising of the sea levels due to the melting of the glaciers, caused by Global Warming. Disruption of the food chain when the apex predators become extinct.

Detailed explanation-2: -1: Secondary succession in the forest: Secondary succession is shown in an oak and hickory forest after a forest fire. Those organisms that could not escape are killed, but their bodies decompose, adding nutrients to the soil. These nutrients provide the basis for new plants to grow.

Detailed explanation-3: -Secondary succession starts when a disturbance (such as wind storms, insect outbreaks, logging, avalanches, bulldozers, or fire) leaves the soil intact. Seeds, spores, and roots usually remain as well. Sites that begin with secondary succession reach the next stage more quickly than during primary succession.

Detailed explanation-4: -Once the eruption has ended, the ecosystem begins its slow transformation as plant life gradually returns. This process is known as ecological succession. The amount of time it takes for vegetation to return to lava flow areas is highly variable from eruption to eruption and is dependent on many different factors.

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